Nice setup. I just recently started shooting with a Mark 5HD 3.6-18 and I am thoroughly impressed. I just grabbed one of your padded slings as well and it's excellent. Good work!
I dig this....thanks for sharing! You can tell a lot of time and experience went into choosing good parts and putting this together. Good inspiration for future builds🤙
This seems to me more of a GPR than SPR. This is basically what I’m building my 13.9 adm uic to. I currently have mi e with a Steiner px4i and it’s very good 400 and in as long as I do my part of course. Trying to now raise that dough for a 2-10 but also thinking of a 1-8 just because having that 1x is super nice and fast. Idk. Still can’t decide haha, it’s a very nice set up my guy. I’m sure it’s very fun and proficient. Thanks for taking the time to show it to us mortals. God bless.
I got a Daniel Defense MK12 a few weeks ago. It came with a SSA trigger, like that trigger so much, I ordered 2 for other AR's. I changed the stock to a Magpul PRS Lite, perfect for that rifle, gave me the adjustability without adding a lot of weight.
@@flatlinefiberco - The SSA is a sweet trigger, that was my first Geissele trigger. I would put one in my S&W performance center AR10 6.5 if it hadn't came with a 2-stage target trigger.
Absolutely love the video man! I just built a Mega AR10 in 308. 18 criterion 1/10 with JP bolt. Geissele SD-E. 3.6-18 MK5HD with piggyback delta point. Harris bipods. All dead air with Samdman L. Gonna do a video like this. You gave me a lot of inspiration! Keep it coming!
Love my flatline sling on my AR10…. I’m also liking your shorty 13.9” SPR rig… I have an 18” criterion lightweight barrel but with a suppressor it can be unwieldy if going on foot patrol in dense vegetation.
I can assure you the difference between 13.9 and 18" is negligible. When talking about moving through dense vegetation. Now, if starting from scratch, sure. I won't argue with the effectiveness of 13.9. But I would not build a 13.9 SPR if I already have an 18" SPR. (I've run an 18" gun for everything for 6 years)
@@grizzle31 yeah… I love my 18” criterion barrel rig suppressed … it makes those 600-700 yards shots much more pleasant… I seem to get more velocity compared to my other 16” and 14.5” ARs since the criterion barrel is handlapped (don’t know if that theory is true, but I get better performance from most match ammo out to distance in comparison to my other rigs) Usually, my “general purpose rifle”usage is satisfied with my 16” and 14.5” set ups ☺️🫡
Hi Chad, @10:42 I'd recommend the SSA-E or the SSP Flat Bow over the SSA. The SSA-E is what I have in my SPR, and it is my favorite trigger on the market. The SSP is also a great option if you like the flat face or single stage triggers (I don't prefer either, but I love that trigger regardless). Great rifle, and thanks for doing a video on it.
I wish this were 18" but otherwise slick build. Love the paint, CTR with the Ariska accessories...very cool. I'm building a similar rifle (different scope, bipod, light but same idea) Great video Note: looked at Zev handguards...what website doesn't put the WEIGHT (or the material) of the handguard? I'll assume its heavy af if they intentionally left it off.
For what I wanted this rifle for the 16” does the job. It hits the velocity I want and gets performs really well. The zev wedge lock hanguards are the same as Hodge, Icon Defense, and SOLGW. The others will have a different profile that you may be looking for.
I've got a 13.9 criterion core and just traded for a 16in criterion hybridgoing to have d.wilson do lmt mrp barrel conversions. Cant wait to see how they shoot
Wild I’ve had neutral/negative experiences with a couple of your parts. Had 2 Criterion 12.5” barrels that both shot 2-3 MOA with typical match type rounds 69/75/77gr that a couple of my other barrels shoot .5-1.5 MOA. Leupold Mark 5 3.6-18x, glass was “milky”/hazy which led to a somewhat blurry image. My 2 Vortex PST Gen II 3-15x were noticeably clearer, crisper, brighter, more contrast, etc. Vltor A5 I generally like just for the longer cycle operation and I’m sure it helps with stress on parts simply bc of its design, but some guns I notice a little bit of a difference, others I didn’t notice any difference at all, and others actually seemed like a sharper recoil impulse. Just my experience over the last several years of being curious and spending money to try different things. Nice build though!
Thanks for the comment man. That is very interesting about the barrels. First I have heard of them not being superb. Did you have the gun on a tripod or supported really well? Not questioning your ability, just curious. I have the Mark 5 3.5-18 as well. Mine is super crisp and clear just like the 2-10. Did you reach out to their customer service? Did you play with the diopter? I had a Vortex 1-10 as well. It was a super nice and crisp optic as well. I just wanted to try something different and the parallax adjustment was important to me. As for the A5 buffer systems. I have them on 4 different rifles and it improved their performance dramatically. Small sample size. Like with all of these things, there is alot of variables at play.
@@flatlinefiberco yeah had the barrels on bipods and bags, gas tube and block were aligned, different muzzle devices, different buffers, etc. Swapped it out direct with criterion (they have amazing customer service) and second one shot about the same. Leupold, yes, claimed everything was good to go. Maybe my eyes just didn’t like their glass 🤷🏻♂️ bummed bc I was excited to be blown away with the most expensive optic I’ve ever bought haha
Just bought my first SPR upper and lower and various parts for it, wondering how you like your KGM? I’ve heard great things about it but would love to see a review about its durability/accuracy in an SPR set up!
Great idea! I do enjoy it and the durability has been great and kgm is known for their precision . Im a fan of flow through cans so maybe a flow through can comparison video.
That’s a really nice build. I’ve used a lot of those parts with good results. If you ever get a chance to chronograph your setup, please share your results.
Very well thought out. Would like to see an update on how the guns configured after working with it. I’ve purchased 4 slings and multiple ear pro wraps from Flatline. They are the best on the market
Yeah, a 16” Min would be WORTH the effort..for the ‘long’ game IMO. BUT, folks are utilizing shorter bbls out to decent ranges these days, with the accuracy question being the BIG one. That generally comes down to barrel and particular ammo SPECIFICS. It just all depends on what a fellow wants to utilize ANY rifle for.. NICE brother.
Absolutely. Im pretty darn consistent out to like 550m with it, but I would like to be consistent out a bit further. I plan to check the velocity on the IMI 77grn smk with the 13.9 barrel. If I need to I will swap to the 16" barrel to get that heavier bullet moving a bit more. We shall see soon!
Only thing I don’t like about Criterion is I can’t get a 1-7 twist. I really wish they offered a 1-7 barrel so bad! Love the build though and I’m getting one of the scopes you got really soon!
Need to make a video and all your findings and you shooting data that will be interesting. Then if you move up to a longer Barrel make a video of those results and data. And on and on. It will be a great series.
Did you do anything to accurize the receiver and barrel bedding or did you just slap it together? Everyone talks about their "SPRs" but so few of them talk about anything other than the brands they have bought for the weapon.
The rifle was built by Stockpile Defense. I know they thermal fit the barrel, but Im not sure about anything else. The receiver lockup is very nice. I get what your saying though.
Man 13.5 barrel leangth is cool for a GP build but what's long range for ya. My 16in or 18in guns do very good with 77SMK just out to 650 to 700. First round hits. Now if your going for a 3 to 400 meter tack driver. Like popin heads distance that's a great set up.
@@flatlinefiberco Ya man cool. This may help you or might sound weird. But I did some security/body guard work and needed different rifles for different things and my pelican box was getting heavy as shit. So I played the three upper two lower game. All my lowers are the same. The three uppers are way different. My GP work horse boy is a 14.5. 1×6 LPVO. Tac light, IR lazer. (All have wrong hand cappibility controls. FYI). Ok my next is the 20in DMR long boy. Still a tac driver but this is outfitted with everything the GP upper has but a dedicated rifle scope 3 × 15 with custom 5.56 rang dials. Plus thurmol piggy back emitter. Next is my I got to be sneaky or I'm kicking doors upper and it's a 12.5 suppressed NFA I got to hide this in my suit rifle. The extra lower is for my partner/spair. So try this out it does well for me I got a pack that fits extra ammo and upper for a long patrol. 12 years of being a machine gunner extra gear no sweet for me. Thanks take it easy man.
@@flatlinefiberco What’s clear from your video is you are not getting proper training or your entire focus would be on the Indian and not the Arrow. Fact is Long Range with the US Service Rifle is ALL about the shooter’s comprehension of the principles, elements, and factors important to good shooting. Long Range Service Rifle Competition proves this, where all shooters bring rifles to the firing line as similar as peas in a pod, yet, while a few highly trained shooters will produce good scores all other shooters will shoot poorly, not having had developed the sort of extraordinary marksmanship knowledge and skills needed behind an AR at Long Range. At any rate, while your rifle may fit a notion of what’s needed for good shooting at Long Range the reality for you will not be best because you appear to not yet have received proper training. It’s no big deal.
@@charlesludwig9173 How exactly did you get all of that from me talking about the details of my rifle? I have actually been training in this realm over the last year with very reputable instructors. This was just my first video on the subject. Nothing about shooting just the rifle. I have put alot of rounds through this rifle since and many more on other platforms. I will continue to put out more content bringing everyone along through my journey. Not everything I do is filmed though. I'm not a content creator superstar. Im a small business owner that has countless of hours in training on various subjects. Even though Ive taken 6 classes on the subject and alot of hours on my own. The journey is just beginning. Thanks for the comment. Have a great day man!
Why not an 16, 18, or 20? I get you can have a very accurate 12.5 or other shorter types but if you want to make it a long range set up why not just get a longer barrel and get more velocity l? I guess if you decide in a few months that long range isn’t the hotness then you have a shorter compact gun for cqb, patrolling, or whatever the new Instagram hotness is.
The short answer is... Because I can. The rifle was intended to be my go to gas gun that has more capability at long range vs my 12.5" rifle. The mile bolt gun will be built eventually, but starting this way gives me a challenge. If I can understand how to shoot far with a 5.56. Then gradually step up to larger calibers. I believe it will give me an advantage for understanding wind. Just my thoughts.... it doesn't make it right for everyone. Stay tuned man! We have more content coming. Thanks for the comment.
13.7 Barrel versus a 16 inch barrel is neglible in terms of proper terminal velocity if you are comfortable shooting at distance and KNOW your rifle. I say nice job and break it in at distance and you'll like what you see.
Factory rifle? I hear good things about the Defoor BCM and Radian rifles. If your doing a custom build I def can’t say enough good things about the Centurion MK12 barrels. For suppressors Im a huge fan of flow through cans. This KGM works great but the HUX flow cans. They provide the least amount of back pressure from what Ive experienced. I have not had experience with the CAT or Liberty Precision cans yet. Hope this helps
@@flatlinefiberco Thank you... Yes I am trying to figure out the rifle... I prefer 16in as that is what I had in OIF... but it's been a long time and I have forgotten more than I knew... I'd like to purchase all together (rifle / scope / red dot / all the extras) from a singular place.. But no clue how to do it or who to contact. I have been thinking of something similar to yours here.. but 16 in. Any guidance would be greatly appreciated... I'd prefer all in one purchase (suppresso on side of course) ... Just completely lost
@@flatlinefiberco SBR, GPR, SPR, PCC, DMR, little bitty, bfr…I get lost in all the designations. Lol, thanks. I feel that people are out there now making up stuff for their next promotion 🤣. Trying to stay in training myself. Have a great day and be safe Brother.
You built a "long range" SPR AR15 with a 13.7" barrel? What do you consider long range? Have you shot long range or researched what shooting out past 300 yards or so ( less than that with your barrel) is like with a 5.56? Nice scope though. I absolutely agree with that on the SPR setup. But long range shooting with the 5.56 requires all of the velocity you can get. The wind blows this round all over the place and the slower it goes the worse it gets. The 13.7 is not an acceptable barrel for shooting long range. That is the most important part of your build. You need a decent barrel to do anything at distance, and you've selected one of the worst options for this platform. Generally, you'd want to be in the 20" range. Some go with 18 because it seems like a more practical length and doesn't lose quite as much as say from 16 to 20. I believe that is what the military uses on their DMR style rifles. But less than 16 isn't even talked about for long range. Look at the difference in velocity you would get from a 14" vs. a 20" barrel and plug the numbers into shooterscalculator. Look at the difference in drop and maybe more importantly wind drift even at 5-600 yards. When you build a rifle for a speciffic purpose, you need to focus on that purpose and build it with that end goal in mind. Especially when considering the most important aspect of the rifle: the barrel. I really hope your video doesn't influence anyone else to waste their money on something like this. This is why we need to bring back the dislike button.
I have shot rifle the way it was in this video out to 1,100 meters, so yes I know what long range shooting is. When this rifle was initially built, it was not for this purpose. Instead of dropping more money I wanted to train with what I have. My long range journey actually started shooting a 12.5" 5.56 out to 800 meters. This rifle has changed a bit since this video and I have collected some good data with everyone comparing a few barrels. Keep in mind alot more goes into it than just the barrel length itself. Saying one barrel length isn't acceptable is just plain wrong. It depends on what the shooter's goals are. Everyone's is different and alot of training can be done with an even shorter barrel. Keep an eye out for the next video. I decided to do some leg work to find the answers myself. At the end of the day the most important thing is we get out and train and learn for ourselves. Thanks for the view and comment.
You indicate that you built this rifle as a long range SPR rifle. Yes, you are absolutely wrong to build it with a short barrel. No one who wants a long range rifle, that understands the ballistics and the effects of velocity reduction and barrel length would choose a short barrel for this purpose. Everything you just said I 100% agree with. The story about wanting to train with what you have and the importance about learning and experimenting, etc. You are entirely right. My problem is that the video describes a build with the purpose of long range shooting. That is not a barrel length that should be chosen for this cartridge with the intent of long range shooting. And anyone who has experience with long range shooting would agree. And no, just because you have shot that to 1, 100 meters does not mean you understand long range shooting and doesn't mean that you are getting acceptable results at that distance. You know you're not and so do I. At that distance, even the longer barrels put a 5.56 cartridge all over the map in any realistic environment. A 20" barrel would still have the bullet dropping about 54 FEET at that distance. To give you a bit of perspective on how the bullet is dropping at that distance, at 1075 its dropping about 6 feet less. There is 6 feet of drop in 25 meters at that distance. And there is 22 feet of wind drift in a 10 mph cross wind. And you want me to believe that you and your little plinker barrel are capable at that distance? Give me a break, man. You're being extremely misleading. Oh and by the way, the 5.56 cartridge has less energy than a 22lr at that distance. If you are serious about long range shooting, do your research and put the time in and stop pretending like you have any idea about what you are talking about and stop denying the fact that your build completely missed the mark. @@flatlinefiberco
Don’t understand why you would build out a 13.9 as a “ long range “ spr? Why wouldn’t you at least go 16? 18 to 20 would be even better. The shorter is better crowd just doesn’t make any sense to me
13.9 is the perfect length. You do not lose more than 40fps from 16 to 13.9 ensuring your shots are still the same in holding and force is still very similar.
..FOR a ‘specific-use’ AR..or carbine, etc…I get what you’re saying..I’m sure so does he. He’s “experimenting” man. Besides..even an SPR can be utilized for ‘something ELSE” if need be. Like I mentioned above, shorter bbl can reach 600 yds, with ‘accuracy’ being the big question. Point is: It’s do-able..
@@IntellectualTerritory Idk, there’s something to be said for 14.5”. It’s WHY the .gov (.mil) issues them. ALSO depends on the ROUND. 5.56..a hotter round, I’d agree with you with 77grs. And, with .300 BLK..the shorter is a great choice to a point. Personally, I wouldn’t go shorter than 10.5” (10.3”) with the .300’s..BUT yeah, we’re talking ‘apples & oranges’
(Legitimate comment) I haven't seen a bayonet on a rifle besides in a class, m203 grenade launcher yes but 13.9 with decent barrel, can, ammo, etc will get it done
The right AR for Long-Range begins pretty much with a match grade 20 inch barrel, free float rail, and Geissele two stage hi-speed trigger, kind of like the SDMRs built by the USAMU. This configuration is authorized for NRA and CMP governed Competitions. Note however that getting good results with such a rifle at long range (1000 yards) demands a lot of marksmanship knowledge and skill. This can be developed from good basic marksmanship training like that delivered in Small Arms Firing School by the United States Army Marksmanship Unit. It’s a 3 day annual event usually presented the last weekend in July at Camp Perry, Ohio. At any rate, shooters attending this event will learn everything important to good shooting and upon training completion shooters will receive certification to enter any CMP/NRA competitions, where they can both test and celebrate their marksmanship development. Now, interestingly enough , beyond a match conditioned rifle, THE most important thing about long range shooting with an AR is an understanding for the effects of wind, since the MOA wind constant from a VLD bullet fired from a 20 inch barrel to 1000 yards is only about 10, meaning just a full value 10 mph wind will deflect the bullet off course about 100 inches. That’s a big deal and it’s what precludes ALL untrained shooters from any long range success with the AR. BTW, for me the greatest challenge to getting good scores with an AR in Service Rifle Division of Long-Range is changing wind velocity in the one to three mph arena as these changing winds are often unobservable but will move the bullet anywhere from 10 to 30 inches off course, meaning an X-Ring hold might end up yielding a hit somewhere out in the 5-Ring. Bottom-line for the author of this video, get back to share your experience on this topic after actually having some experience with it. I think your perspective might be more on marksmanship principles and less on what equipment you are bringing to the firing line. My credentials: Military Rifle Instructor assisting the USAMU deliver SDM, TTT, and SAFS Training, US Distinguished Rifleman, and American High Power Rifleman Award in Long-Range.
I'm not really sure why you felt the need to delete your previous arrogant comment and then write this. Since you seem to consider yourself a SME. I encourage you to grab you phone and go film a video explaining and demonstrating the basic principles you described. Check your ego dude and maybe not assume so much.
@charlesludwig9173 he’s clearly not shooting CMP and NRA service rifle so I’m not sure why you even brought that up. On top of that SAFS at Camp Perry is fired at 200 yards and isn’t something I’d send someone specifically looking for practical long range shooting knowledge. We aren’t using jackets and leather slings outside of the square range so training with modern technology while still incorporating not moving the rifle while firing it is key to todays and future success.
@@veracitysolutionsllc brought it up because that training is fundamental and paramount to long range. Which of these is not important to long range: sight alignment, trigger control, position factors, wind effects? They’re all important and must be mastered for good long range shooting no matter what technology comes to the shooter’s aid. And these subjects are all covered in SAFS. Fact is the author of this video is not qualified to profess on the subject, period.
@@flatlinefiberco I rewrote to give you a break and not be arrogant but what the heck you do not have the credentials to profess on this matter and it shows. As you develop skill in this arena you will understand that.
@@charlesludwig9173 Whenexactly in this video did I claim to be a subject matter expert in long range shooting? When did I explain the fundamentals of marksmenship? This video was a simple video breaking down the details of my rifle. I'm completely humble in the video and explain the build may change and evolve with my experience. I don't speak on sight alignment, trigger control, position, or wind.... because this isn't a instructional video! It's just a rifle overview lol. There is definitely more videos to come where I may talk about some of these things, but Im not a sme, so I probably wont dive deep into these things. Your assumption of my knowledge and experience from this simple video is just slightly crazy. When will you be posting a video for the world to see so we can assume and critique you? I doubt you ever will.
5.56 is a high velocity round. It gets is power from its high speed. Shooting a light bullet long range >450 meters from a short barrel is foolish because it causes the round to deflect too much in the wind and the bullet loses too much hitting power at those distances. You’ll miss too many initial shots and won’t kill what you you finally hit. This is not practical, unless you consider long range to be 300 meters at which point you could save all that gear and learn to use iron sights. This is a silly internet COD build (again)
Hey Mac. See..... I get what your saying, but I actually shoot and collect data on this rifle. The information you just stated is somewhat true, but the distance is very far off and varies. One would have to know the velocity to speak on this information in such an absolute manner. This rifle is very capable to 700 meters and Ive stretched it to 1,100. Check out Part 2
@@flatlinefiberco hey, appreciate your response and I watched part two as well. Please look into an 18’ or 20’ inch barrel for your build. The current build you have now, minus the scope, would make a great fighting rifle. Look into a MK12 upper receiver made by Daniel Defense or BCM for a fantastic SPR purpose gun, add your scope on top and you’re good to go. Lastly, I see you’re using 77gr black hills ammo which is expensive and hard to come by. There are some .223 chambered loads that perform well.
@@flatlinefiberco hey I’m sorry if you think I’m giving you a hard time, I’m not. You’ve spent some change investing in this ‘home’, and it’s a good one so don’t get discouraged when anyone offers different suggestions. I’d really like if you’d explore the potential of that 77gr black hills with a 18’ match barrel that is truly suited for 500+ yard shooting.
@@MackTheGovnah It's really your delivery man. Using words like foolish and being insulting. I will probably get an 18" barreled rifle one day, but right now I don't need it. I can shoot 500 meters just fine with my 12.5" and very well with my 16" rifle. Thanks man. Happy Training
i really love pws rifles more than lwrc and hk for the price you pay and it comes with an adjustable gas block. I got a lower myself to build on and as a left handed shooter, piston systems are the way to go as not many gas to the face
Nice rifle and setup, love seeing the various channels that cover their gear. Keep it up.
Thanks man!
I think thats a pretty clean build! Nice work man!
Thanks man!
Like your humility, and your rifle.
Thanks man
That's a gorgeous build.
Thanks man.
Nice setup. I just recently started shooting with a Mark 5HD 3.6-18 and I am thoroughly impressed. I just grabbed one of your padded slings as well and it's excellent. Good work!
Thanks man! I have been very pleased with the Mark 5 scopes. They have everything I need for sure. Thanks for the support man!
I dig this....thanks for sharing! You can tell a lot of time and experience went into choosing good parts and putting this together. Good inspiration for future builds🤙
Thanks man! I appreciate you checking out the video!
Nice set up! Good work👌🏻
Thanks man!
Nice build buddy. Keep putting vids out. I subbed.
Thanks man.
Nice setup Brotha! Good vid! Subbed!
Thanks man!
You pronounced it perfect! Very nice setup🔥🔥🔥🔥!
Thanks man! I'm loving it so far.
@@flatlinefiberco 🤘🙌
@@koengCO 🙌🙌
This seems to me more of a GPR than SPR. This is basically what I’m building my 13.9 adm uic to. I currently have mi e with a Steiner px4i and it’s very good 400 and in as long as I do my part of course. Trying to now raise that dough for a 2-10 but also thinking of a 1-8 just because having that 1x is super nice and fast. Idk. Still can’t decide haha, it’s a very nice set up my guy. I’m sure it’s very fun and proficient. Thanks for taking the time to show it to us mortals. God bless.
Lol Thanks man!
I got a Daniel Defense MK12 a few weeks ago. It came with a SSA trigger, like that trigger so much, I ordered 2 for other AR's. I changed the stock to a Magpul PRS Lite, perfect for that rifle, gave me the adjustability without adding a lot of weight.
That sounds awesome man! I dig the SSA triggers as well. I swapped my 308 gas gun trigger to a SSA.
@@flatlinefiberco - The SSA is a sweet trigger, that was my first Geissele trigger. I would put one in my S&W performance center AR10 6.5 if it hadn't came with a 2-stage target trigger.
Nice build I went with the Triggertech single stage adaptable trigger & it's the bomb. No creep & short reset.
Triggertechs are nice! I prefer two stage triggers in my rifles though.
Great looking rifle ❤
Thanks guys!
Can vouch for Stockpile Defense, DAMN nice rifle bro... Well thought out perfectly executed
Thank you! Stockpile is definitely legit and a great group of guys!
Nice Build!
Thanks man!
Absolutely love the video man! I just built a Mega AR10 in 308. 18 criterion 1/10 with JP bolt. Geissele SD-E. 3.6-18 MK5HD with piggyback delta point. Harris bipods. All dead air with Samdman L. Gonna do a video like this. You gave me a lot of inspiration! Keep it coming!
Sounds like a great build man! Get after it dude! 🤘
what do you think about 20" ar 5.56 with PA 3-18x44 athena bpr mil reticle?
@@AmericanelST205 I'm no expert, but that sounds very cool man.
Nice. I love my mega. Thinking I’m going to get another upper in 8.6
Nice build!
Thanks man
Nice build bro 👍🏽
Thanks man!
Good lord what a rifle.
🤘🤘
Love my flatline sling on my AR10….
I’m also liking your shorty 13.9” SPR rig… I have an 18” criterion lightweight barrel but with a suppressor it can be unwieldy if going on foot patrol in dense vegetation.
Thanks man. Yea so far so good. I need to gather more data, but I'm digging it thus far.
I can assure you the difference between 13.9 and 18" is negligible. When talking about moving through dense vegetation. Now, if starting from scratch, sure. I won't argue with the effectiveness of 13.9. But I would not build a 13.9 SPR if I already have an 18" SPR. (I've run an 18" gun for everything for 6 years)
@@grizzle31 yeah… I love my 18” criterion barrel rig suppressed … it makes those 600-700 yards shots much more pleasant… I seem to get more velocity compared to my other 16” and 14.5” ARs since the criterion barrel is handlapped (don’t know if that theory is true, but I get better performance from most match ammo out to distance in comparison to my other rigs) Usually, my “general purpose rifle”usage is satisfied with my 16” and 14.5” set ups ☺️🫡
Hi Chad, @10:42 I'd recommend the SSA-E or the SSP Flat Bow over the SSA. The SSA-E is what I have in my SPR, and it is my favorite trigger on the market. The SSP is also a great option if you like the flat face or single stage triggers (I don't prefer either, but I love that trigger regardless). Great rifle, and thanks for doing a video on it.
I ended up dropping an SSA-E in it. Thanks man! More coming soon!
@@flatlinefiberco Sweet, enjoy.
I wish this were 18" but otherwise slick build. Love the paint, CTR with the Ariska accessories...very cool. I'm building a similar rifle (different scope, bipod, light but same idea) Great video
Note: looked at Zev handguards...what website doesn't put the WEIGHT (or the material) of the handguard? I'll assume its heavy af if they intentionally left it off.
For what I wanted this rifle for the 16” does the job. It hits the velocity I want and gets performs really well.
The zev wedge lock hanguards are the same as Hodge, Icon Defense, and SOLGW. The others will have a different profile that you may be looking for.
I've got a 13.9 criterion core and just traded for a 16in criterion hybridgoing to have d.wilson do lmt mrp barrel conversions. Cant wait to see how they shoot
That's awesome!
Wild I’ve had neutral/negative experiences with a couple of your parts. Had 2 Criterion 12.5” barrels that both shot 2-3 MOA with typical match type rounds 69/75/77gr that a couple of my other barrels shoot .5-1.5 MOA. Leupold Mark 5 3.6-18x, glass was “milky”/hazy which led to a somewhat blurry image. My 2 Vortex PST Gen II 3-15x were noticeably clearer, crisper, brighter, more contrast, etc. Vltor A5 I generally like just for the longer cycle operation and I’m sure it helps with stress on parts simply bc of its design, but some guns I notice a little bit of a difference, others I didn’t notice any difference at all, and others actually seemed like a sharper recoil impulse. Just my experience over the last several years of being curious and spending money to try different things. Nice build though!
Thanks for the comment man. That is very interesting about the barrels. First I have heard of them not being superb. Did you have the gun on a tripod or supported really well? Not questioning your ability, just curious. I have the Mark 5 3.5-18 as well. Mine is super crisp and clear just like the 2-10. Did you reach out to their customer service? Did you play with the diopter? I had a Vortex 1-10 as well. It was a super nice and crisp optic as well. I just wanted to try something different and the parallax adjustment was important to me. As for the A5 buffer systems. I have them on 4 different rifles and it improved their performance dramatically. Small sample size. Like with all of these things, there is alot of variables at play.
@@flatlinefiberco yeah had the barrels on bipods and bags, gas tube and block were aligned, different muzzle devices, different buffers, etc. Swapped it out direct with criterion (they have amazing customer service) and second one shot about the same. Leupold, yes, claimed everything was good to go. Maybe my eyes just didn’t like their glass 🤷🏻♂️ bummed bc I was excited to be blown away with the most expensive optic I’ve ever bought haha
Just bought my first SPR upper and lower and various parts for it, wondering how you like your KGM? I’ve heard great things about it but would love to see a review about its durability/accuracy in an SPR set up!
Great idea! I do enjoy it and the durability has been great and kgm is known for their precision . Im a fan of flow through cans so maybe a flow through can comparison video.
That’s a really nice build. I’ve used a lot of those parts with good results. If you ever get a chance to chronograph your setup, please share your results.
Thanks man! We are filming a follow up video that will be posted soon. Just have to film the last bit of it. So keep an eye out.
I did chronograph it with this barrel and a 16" Centerion for comparison. All that good info will be in the video.
@@flatlinefiberco I look forward to watching your follow up
Very well thought out. Would like to see an update on how the guns configured after working with it.
I’ve purchased 4 slings and multiple ear pro wraps from Flatline. They are the best on the market
Thanks for the support man!
We have an update video coming soon. Thanks
@@flatlinefibercohave to rep the Georgia companies. In my channel video I have both the sling and ear pro wrap in it
Im plan to buy and put on top he509t
Yeah, a 16” Min would be WORTH the effort..for the ‘long’ game IMO. BUT, folks are utilizing shorter bbls out to decent ranges these days, with the accuracy question being the BIG one. That generally comes down to barrel and particular ammo SPECIFICS. It just all depends on what a fellow wants to utilize ANY rifle for.. NICE brother.
Absolutely. Im pretty darn consistent out to like 550m with it, but I would like to be consistent out a bit further. I plan to check the velocity on the IMI 77grn smk with the 13.9 barrel. If I need to I will swap to the 16" barrel to get that heavier bullet moving a bit more. We shall see soon!
Only thing I don’t like about Criterion is I can’t get a 1-7 twist. I really wish they offered a 1-7 barrel so bad! Love the build though and I’m getting one of the scopes you got really soon!
just do 1 in 8
1:8 is best
Why are you opposed to 1:8? Or why do you want a 1:7?
Tie some paracord to the feet of the bipod so they can be deployed fast.
For sure!
I saw that on a channel awhile back, genuis idea
Need to make a video and all your findings and you shooting data that will be interesting. Then if you move up to a longer Barrel make a video of those results and data. And on and on. It will be a great series.
In the works man! The 16" came in and will get installed after 1 more range trip. 🤘
Such a dope build. I am impressed 💪
How much this whole awesomeness cost roughly?
Thanks man. I would have to add it all up. Things were purchased at seperate times. The bare rifle itself was $2,500.
Is that color for the padded sling going to be added to the website? Sweet build!
Hopefully we get caught up sooner than later and we have time to make them. They will be available at some point for sure.
Why is this seamstress armed? 😂 jk love that stick my man!
We prefer SEWIST 😂
@@flatlinefiberco : Is the Optic on it one of the Leopold 2-10x’s in a 🦡 C.O.M.M.’s Mount?
I like the paint job. What was the name of the light cover? I have a surefire scout and am looking for a cap.
Thank you! The light cap is made by One Hundred Concepts
Did you do anything to accurize the receiver and barrel bedding or did you just slap it together? Everyone talks about their "SPRs" but so few of them talk about anything other than the brands they have bought for the weapon.
The rifle was built by Stockpile Defense. I know they thermal fit the barrel, but Im not sure about anything else. The receiver lockup is very nice. I get what your saying though.
Man 13.5 barrel leangth is cool for a GP build but what's long range for ya. My 16in or 18in guns do very good with 77SMK just out to 650 to 700. First round hits. Now if your going for a 3 to 400 meter tack driver. Like popin heads distance that's a great set up.
Watch the next video man. Thanks for the comment.
@@flatlinefiberco Ya man cool. This may help you or might sound weird. But I did some security/body guard work and needed different rifles for different things and my pelican box was getting heavy as shit. So I played the three upper two lower game. All my lowers are the same. The three uppers are way different. My GP work horse boy is a 14.5. 1×6 LPVO. Tac light, IR lazer. (All have wrong hand cappibility controls. FYI). Ok my next is the 20in DMR long boy. Still a tac driver but this is outfitted with everything the GP upper has but a dedicated rifle scope 3 × 15 with custom 5.56 rang dials. Plus thurmol piggy back emitter. Next is my I got to be sneaky or I'm kicking doors upper and it's a 12.5 suppressed NFA I got to hide this in my suit rifle. The extra lower is for my partner/spair. So try this out it does well for me I got a pack that fits extra ammo and upper for a long patrol. 12 years of being a machine gunner extra gear no sweet for me. Thanks take it easy man.
I put a Geissele Super Tricon in my SPR build.
Awesome. Triggers
Is that cerakote or rattle can? I’m fixing to do mine and I’m trying to make up my mind.
That's rattle can. It's easy to remove or add more paint.
Long range as in plinking for fun i suppose
Every time I pick up a rifle I'm training. No plinking over here.
@@flatlinefiberco What’s clear from your video is you are not getting proper training or your entire focus would be on the Indian and not the Arrow. Fact is Long Range with the US Service Rifle is ALL about the shooter’s comprehension of the principles, elements, and factors important to good shooting. Long Range Service Rifle Competition proves this, where all shooters bring rifles to the firing line as similar as peas in a pod, yet, while a few highly trained shooters will produce good scores all other shooters will shoot poorly, not having had developed the sort of extraordinary marksmanship knowledge and skills needed behind an AR at Long Range. At any rate, while your rifle may fit a notion of what’s needed for good shooting at Long Range the reality for you will not be best because you appear to not yet have received proper training. It’s no big deal.
@@charlesludwig9173 How exactly did you get all of that from me talking about the details of my rifle?
I have actually been training in this realm over the last year with very reputable instructors. This was just my first video on the subject. Nothing about shooting just the rifle. I have put alot of rounds through this rifle since and many more on other platforms.
I will continue to put out more content bringing everyone along through my journey. Not everything I do is filmed though. I'm not a content creator superstar. Im a small business owner that has countless of hours in training on various subjects. Even though Ive taken 6 classes on the subject and alot of hours on my own. The journey is just beginning. Thanks for the comment. Have a great day man!
Why not an 16, 18, or 20? I get you can have a very accurate 12.5 or other shorter types but if you want to make it a long range set up why not just get a longer barrel and get more velocity l? I guess if you decide in a few months that long range isn’t the hotness then you have a shorter compact gun for cqb, patrolling, or whatever the new Instagram hotness is.
The short answer is... Because I can. The rifle was intended to be my go to gas gun that has more capability at long range vs my 12.5" rifle. The mile bolt gun will be built eventually, but starting this way gives me a challenge. If I can understand how to shoot far with a 5.56. Then gradually step up to larger calibers. I believe it will give me an advantage for understanding wind. Just my thoughts.... it doesn't make it right for everyone. Stay tuned man! We have more content coming. Thanks for the comment.
13.7 Barrel versus a 16 inch barrel is neglible in terms of proper terminal velocity if you are comfortable shooting at distance and KNOW your rifle. I say nice job and break it in at distance and you'll like what you see.
For sure. Eventually I may swap to the 16" barrel if I can't get 77gr smk moving fast enough with the 13.9. More testing coming
There’s nothing close to the “flow through” like a Huxwrx
I have one of those as well. Awesome cans!
what would be highest rated or best 16 in rifle / suppressor combo for similar build?
Factory rifle? I hear good things about the Defoor BCM and Radian rifles. If your doing a custom build I def can’t say enough good things about the Centurion MK12 barrels. For suppressors Im a huge fan of flow through cans. This KGM works great but the HUX flow cans. They provide the least amount of back pressure from what Ive experienced. I have not had experience with the CAT or Liberty Precision cans yet. Hope this helps
@@flatlinefiberco Thank you... Yes I am trying to figure out the rifle... I prefer 16in as that is what I had in OIF... but it's been a long time and I have forgotten more than I knew... I'd like to purchase all together (rifle / scope / red dot / all the extras) from a singular place.. But no clue how to do it or who to contact. I have been thinking of something similar to yours here.. but 16 in. Any guidance would be greatly appreciated... I'd prefer all in one purchase (suppresso on side of course) ... Just completely lost
Nice Rifle how much does it weigh?
About 12lbs
Nice sbr but if you want to fill an spr role and bridge that gap between carbine and full power rifles.. needs to be an 18ich or even 20
Does it though?
Where did you source the bag rider?
Arisaka
If an IR laser device is put on that does it become a General Purpose Rifle?
Imo laser devices can be used on any platform, but Im not a sme.
@@flatlinefiberco SBR, GPR, SPR, PCC, DMR, little bitty, bfr…I get lost in all the designations. Lol, thanks. I feel that people are out there now making up stuff for their next promotion 🤣. Trying to stay in training myself. Have a great day and be safe Brother.
@@russream3732 Oh for sure. I really don't care what the designation is ya know, as long as I know my purpose for the rifle. That's what matters imo.
I don’t understand that you want lens cover so your light doesn’t reflect yet no scope covers
Simple answer. Scope covers are incoming. I ordered the wrong size.
You built a "long range" SPR AR15 with a 13.7" barrel? What do you consider long range? Have you shot long range or researched what shooting out past 300 yards or so ( less than that with your barrel) is like with a 5.56? Nice scope though. I absolutely agree with that on the SPR setup. But long range shooting with the 5.56 requires all of the velocity you can get. The wind blows this round all over the place and the slower it goes the worse it gets. The 13.7 is not an acceptable barrel for shooting long range. That is the most important part of your build. You need a decent barrel to do anything at distance, and you've selected one of the worst options for this platform. Generally, you'd want to be in the 20" range. Some go with 18 because it seems like a more practical length and doesn't lose quite as much as say from 16 to 20. I believe that is what the military uses on their DMR style rifles. But less than 16 isn't even talked about for long range. Look at the difference in velocity you would get from a 14" vs. a 20" barrel and plug the numbers into shooterscalculator. Look at the difference in drop and maybe more importantly wind drift even at 5-600 yards. When you build a rifle for a speciffic purpose, you need to focus on that purpose and build it with that end goal in mind. Especially when considering the most important aspect of the rifle: the barrel. I really hope your video doesn't influence anyone else to waste their money on something like this. This is why we need to bring back the dislike button.
I have shot rifle the way it was in this video out to 1,100 meters, so yes I know what long range shooting is. When this rifle was initially built, it was not for this purpose. Instead of dropping more money I wanted to train with what I have. My long range journey actually started shooting a 12.5" 5.56 out to 800 meters. This rifle has changed a bit since this video and I have collected some good data with everyone comparing a few barrels. Keep in mind alot more goes into it than just the barrel length itself. Saying one barrel length isn't acceptable is just plain wrong. It depends on what the shooter's goals are. Everyone's is different and alot of training can be done with an even shorter barrel. Keep an eye out for the next video. I decided to do some leg work to find the answers myself. At the end of the day the most important thing is we get out and train and learn for ourselves. Thanks for the view and comment.
You indicate that you built this rifle as a long range SPR rifle. Yes, you are absolutely wrong to build it with a short barrel. No one who wants a long range rifle, that understands the ballistics and the effects of velocity reduction and barrel length would choose a short barrel for this purpose. Everything you just said I 100% agree with. The story about wanting to train with what you have and the importance about learning and experimenting, etc. You are entirely right. My problem is that the video describes a build with the purpose of long range shooting. That is not a barrel length that should be chosen for this cartridge with the intent of long range shooting. And anyone who has experience with long range shooting would agree. And no, just because you have shot that to 1, 100 meters does not mean you understand long range shooting and doesn't mean that you are getting acceptable results at that distance. You know you're not and so do I. At that distance, even the longer barrels put a 5.56 cartridge all over the map in any realistic environment. A 20" barrel would still have the bullet dropping about 54 FEET at that distance. To give you a bit of perspective on how the bullet is dropping at that distance, at 1075 its dropping about 6 feet less. There is 6 feet of drop in 25 meters at that distance. And there is 22 feet of wind drift in a 10 mph cross wind. And you want me to believe that you and your little plinker barrel are capable at that distance? Give me a break, man. You're being extremely misleading. Oh and by the way, the 5.56 cartridge has less energy than a 22lr at that distance. If you are serious about long range shooting, do your research and put the time in and stop pretending like you have any idea about what you are talking about and stop denying the fact that your build completely missed the mark. @@flatlinefiberco
@@rickyanderson2505 exactly
These comments are ridiculous
@@rickyanderson2505 Wow. You are hilarious man.
Don’t understand why you would build out a 13.9 as a “ long range “ spr? Why wouldn’t you at least go 16? 18 to 20 would be even better. The shorter is better crowd just doesn’t make any sense to me
13.9 is the perfect length. You do not lose more than 40fps from 16 to 13.9 ensuring your shots are still the same in holding and force is still very similar.
..FOR a ‘specific-use’ AR..or carbine, etc…I get what you’re saying..I’m sure so does he. He’s “experimenting” man. Besides..even an SPR can be utilized for ‘something ELSE” if need be. Like I mentioned above, shorter bbl can reach 600 yds, with ‘accuracy’ being the big question. Point is: It’s do-able..
@@IntellectualTerritory Idk, there’s something to be said for 14.5”. It’s WHY the .gov (.mil) issues them. ALSO depends on the ROUND. 5.56..a hotter round, I’d agree with you with 77grs. And, with .300 BLK..the shorter is a great choice to a point. Personally, I wouldn’t go shorter than 10.5” (10.3”) with the .300’s..BUT yeah, we’re talking ‘apples & oranges’
@@m118lr they use 14.5 bc a bayonet can still be attached.
(Legitimate comment) I haven't seen a bayonet on a rifle besides in a class, m203 grenade launcher yes but 13.9 with decent barrel, can, ammo, etc will get it done
People are too focused on the gear, and not enough on shooting
Very true
It's probably airsoft.
How did you know? 😂
The right AR for Long-Range begins pretty much with a match grade 20 inch barrel, free float rail, and Geissele two stage hi-speed trigger, kind of like the SDMRs built by the USAMU. This configuration is authorized for NRA and CMP governed Competitions. Note however that getting good results with such a rifle at long range (1000 yards) demands a lot of marksmanship knowledge and skill. This can be developed from good basic marksmanship training like that delivered in Small Arms Firing School by the United States Army Marksmanship Unit. It’s a 3 day annual event usually presented the last weekend in July at Camp Perry, Ohio. At any rate, shooters attending this event will learn everything important to good shooting and upon training completion shooters will receive certification to enter any CMP/NRA competitions, where they can both test and celebrate their marksmanship development. Now, interestingly enough , beyond a match conditioned rifle, THE most important thing about long range shooting with an AR is an understanding for the effects of wind, since the MOA wind constant from a VLD bullet fired from a 20 inch barrel to 1000 yards is only about 10, meaning just a full value 10 mph wind will deflect the bullet off course about 100 inches. That’s a big deal and it’s what precludes ALL untrained shooters from any long range success with the AR. BTW, for me the greatest challenge to getting good scores with an AR in Service Rifle Division of Long-Range is changing wind velocity in the one to three mph arena as these changing winds are often unobservable but will move the bullet anywhere from 10 to 30 inches off course, meaning an X-Ring hold might end up yielding a hit somewhere out in the 5-Ring. Bottom-line for the author of this video, get back to share your experience on this topic after actually having some experience with it. I think your perspective might be more on marksmanship principles and less on what equipment you are bringing to the firing line. My credentials: Military Rifle Instructor assisting the USAMU deliver SDM, TTT, and SAFS Training, US Distinguished Rifleman, and American High Power Rifleman Award in Long-Range.
I'm not really sure why you felt the need to delete your previous arrogant comment and then write this.
Since you seem to consider yourself a SME. I encourage you to grab you phone and go film a video explaining and demonstrating the basic principles you described. Check your ego dude and maybe not assume so much.
@charlesludwig9173 he’s clearly not shooting CMP and NRA service rifle so I’m not sure why you even brought that up. On top of that SAFS at Camp Perry is fired at 200 yards and isn’t something I’d send someone specifically looking for practical long range shooting knowledge. We aren’t using jackets and leather slings outside of the square range so training with modern technology while still incorporating not moving the rifle while firing it is key to todays and future success.
@@veracitysolutionsllc brought it up because that training is fundamental and paramount to long range. Which of these is not important to long range: sight alignment, trigger control, position factors, wind effects? They’re all important and must be mastered for good long range shooting no matter what technology comes to the shooter’s aid. And these subjects are all covered in SAFS. Fact is the author of this video is not qualified to profess on the subject, period.
@@flatlinefiberco I rewrote to give you a break and not be arrogant but what the heck you do not have the credentials to profess on this matter and it shows. As you develop skill in this arena you will understand that.
@@charlesludwig9173 Whenexactly in this video did I claim to be a subject matter expert in long range shooting? When did I explain the fundamentals of marksmenship? This video was a simple video breaking down the details of my rifle. I'm completely humble in the video and explain the build may change and evolve with my experience.
I don't speak on sight alignment, trigger control, position, or wind.... because this isn't a instructional video!
It's just a rifle overview lol. There is definitely more videos to come where I may talk about some of these things, but Im not a sme, so I probably wont dive deep into these things. Your assumption of my knowledge and experience from this simple video is just slightly crazy.
When will you be posting a video for the world to see so we can assume and critique you? I doubt you ever will.
5.56 is a high velocity round. It gets is power from its high speed.
Shooting a light bullet long range >450 meters from a short barrel is foolish because it causes the round to deflect too much in the wind and the bullet loses too much hitting power at those distances. You’ll miss too many initial shots and won’t kill what you you finally hit. This is not practical, unless you consider long range to be 300 meters at which point you could save all that gear and learn to use iron sights. This is a silly internet COD build (again)
Hey Mac. See..... I get what your saying, but I actually shoot and collect data on this rifle. The information you just stated is somewhat true, but the distance is very far off and varies. One would have to know the velocity to speak on this information in such an absolute manner. This rifle is very capable to 700 meters and Ive stretched it to 1,100.
Check out Part 2
@@flatlinefiberco hey, appreciate your response and I watched part two as well. Please look into an 18’ or 20’ inch barrel for your build. The current build you have now, minus the scope, would make a great fighting rifle. Look into a MK12 upper receiver made by Daniel Defense or BCM for a fantastic SPR purpose gun, add your scope on top and you’re good to go.
Lastly, I see you’re using 77gr black hills ammo which is expensive and hard to come by. There are some .223 chambered loads that perform well.
@@MackTheGovnah Hey man, I live in a place where I can shoot what I want and do what I want man. So have fun doing what you enjoy doing. Thanks 👍
@@flatlinefiberco hey I’m sorry if you think I’m giving you a hard time, I’m not.
You’ve spent some change investing in this ‘home’, and it’s a good one so don’t get discouraged when anyone offers different suggestions. I’d really like if you’d explore the potential of that 77gr black hills with a 18’ match barrel that is truly suited for 500+ yard shooting.
@@MackTheGovnah It's really your delivery man. Using words like foolish and being insulting. I will probably get an 18" barreled rifle one day, but right now I don't need it. I can shoot 500 meters just fine with my 12.5" and very well with my 16" rifle. Thanks man. Happy Training
Did you literally not talk barrel or BCG? You just talked on and on about accessories wtf
I most definitely talked about both. You gonna be ok today? Need a Snickers?
Yeah he mentioned both, he pretty much gave us the whole run down, don't think he mentioned gas block if you're just anal
@@flatlinefiberco Everyone makes mistakes. I swear to god I even re-winded the vid to see if i missed barrel and BCG. What barrel and BCG?
It's a 13.9" Criterion barrel with a Centurion bcg
Yup. Everyone makes mistakes. Being a little more polite helps as well.
Ok great….you bought parts and put them on a gun…..outstanding
Yup. That's pretty much was the point of the video. Just going over my build. What is your point?
@@flatlinefiberco ..he’s in his mom’s basement..”sulking” over YOUR build really..😉
Give Brandon a break, that was probably the most intelligent thing he could think of.
😂 Is he always this unhappy?
Everybody's hangry
🤮🤮🤮👎🏾👎🏾👎🏾
😂 You mad bro?
@@flatlinefiberco on a good day!
@@ellerybice3787 Fair enough lol
Anything specific you don’t like?
i really love pws rifles more than lwrc and hk for the price you pay and it comes with an adjustable gas block. I got a lower myself to build on and as a left handed shooter, piston systems are the way to go as not many gas to the face
They make great stuff that's for sure!
I like pws