AR 15 gas systems and barrel lengths, which one?
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- čas přidán 12. 09. 2024
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Outstanding presentation. If I had watched this video two weeks ago, when I knew a lot less about this platform than I do today, it would taught me everything I need to know about the different gas system lengths.
The pace at which you speak, with well placed pauses, is very beneficial to people who are learning this for the first time by allowing them to process and keep up with all of the pertinent information you are presenting. Very well done.
Very nice video bro.
+Reid Henrichs I can try this family friendly thing too lol.
+AregularGuy Where's the cigarette?
+AregularGuy Changed to a mid-length gas system on my SBR. It doesn't work; why do my hand guards keep flying off when I shoot?
+StudyinSteel That's Because Your Gas Block Is Not Aligned With The Gas Port On The Rifle.
+AregularGuy I can tell it is hard on you! Haha. Good video, brother.
I trained with the M-16 A2 in the USMC. Great rifle. I was platoon high shooter. Excellent out to 500 yards point target 800 area target. Having watched your video I would prefer the 16" with a mid length gas system. I want it for home defense and other farther distance situations. Thanks for the knowledge.
Brilliant work!!! going 16" with mid length.
Good choice
The longer the gas tube the better
Mine is the Rifle length in 18” MK 12 mod 0
My port size is the Spec MK 12 of .105” works perfect .
Man, I have underwear older than you but you know your stuff. I've been an Armorer forever and you explained things well. I never heard Dwell Time but you got the point across. I prefer a midlength with a 16" barrel, running an H2 buffer if it will cycle reliably. That system will get you back on target very fast and not give up too much velocity. 5.56 loves a 20" barrel for terminal performance! Great video man!
I served in the Marines and the Army National Guard. I was an Infantryman in both. In the Marines I used the Colt M16A2 with iron sights and the Knights Armament M16A4 with Iron sights. In the National Guard I used a Colt M4 Carbine. The best reliability and accuracy I found was in the Knights Armament M16A4. I agree with your idea on putting a collapsible stock on a full length AR. To me that's the way to go. I like a full length AR with an adjustable length of pull. It makes MOUT a tad easier without sacrificing reliability and longer range accuracy.
Matt The Marine.... FN made our A4's.. KAC just made the hand guard. They were very reliable indeed.
Matt The Marine i was told that " MILITARILY" a 20" with the collapseable stock was illegal. Not sure why but hey ......go figure right
Matt The Marine I did the same bro! OorahHooah
Ras Al Ghul the Canadians roll with a 20” and carbine stock
Matt The Marine, IIRC, the M16A4 had a little heavier barrel then the A2 had.
The mid works quit well on a 14.5 for follow up shots.
If anyone needs a new opinion… read below.
Home defense:
11.5” / 12.5” 5.56 with carbine gas and A5 rifle buffer.
All around king:
13.9” or 13.7” 5.56 with mid length gas system and A5 buffer.
Put an Vortex LPVO and give me 77gr Blackhills ammo and I’ll outperform anyone on the 14.5” up to 18” platforms easy. Key is also to have good ammo. 55gr isn’t my go to.
Thanks for the great video, as a fellow lefty and guy looking into an AR your videos just keep hitting the nail on the head for what I need to know!
My 10.5 palmetto State AR-15 pistol is I have over 5,000 rounds now and it's been running reliable I've had maybe a handful of mishaps such as maybe a failure to feed them around because the magazine wasn't seated properly I had one double feed and then one failure to eject out of all those so I'm quite happy with my PSA purchase
I’m so glad I watched this, because I’ve been kicking myself silly. I bought a 16” 300blk AR and I want to go ahead and get a 5.56 AR now, but when I got the 300blk I didn’t realize that it would have been way sweeter of a home defense gun if I’d gotten a short barrel. 300blk out of a 10.5 inch barrel would have been plenty long enough to get good ballistics out of the 300blk. Since I already have a 16” rifle and really want a “pistol” but I didn’t want to get 5.56 in a short barrel I couldn’t justify having a 16” 300blk and a 11.5” 5.56. That’s too ass backwards lol so I’m just going to get another 16” in 5.56 and I’ll have 2 -16” rifles and be happy with that.
Get the barrel cut down a lil
AR was designed around the 556 in a 20 inch barrel rifle gas system. M4 carbine the military found the sweet spot at 14.5 carbine. Good for cqb and distance. For legal reasons I may just go 16 inch carbine. Rather than buying a 14.5 and putting the big flash hider to make it 16 or put it on a pistol. For 25 yards to 200 yards really
Good job...and many thanks to your parents. Most of what I know about my AR-15 and rifle craft comes from you, Reid and Sootch. So, I encourage you to keep on keepin' on. Any chance you can produce a video or two on home defense techniques, such as CQB and/or home clearing? Maybe you already have, but I'm not aware of it. Thanks again.
Excellent video...
I prefer the 16" barrel with the mid-length gas... I do notice it being smoother than 16" carbine system...
My understanding is the carbine system was designed for the 14.5" barrel so it slightly over gasses a 16" barrel...
The mid-length gas has about the same dwell time as the 20" barrel with rifle length gas system.
Great video. Just found this video. I'm in the middle of building my first AR15 and doing research. Awesome how you break things down👍👍👍
Thank you for that non-profane, mature look at the options in choosing an AR15 style rifle.
This video was very informative, without the childish macho attitude displayed on many other such lame firearm videos.
Agan, great job man, keep them coming.
I love the 20" barrel, Rifle length gas system, with a collapseable stock. I've used it for years, with only an extractor repair. I did upgrade the factory trigger w/ only polishing & heavy hammer spring and light trigger spring. It's about 9lbs with optic and 20rnd mag. It's stupid accurate, reliable, & I can carry it all day long. Good luck and pay attention to this young Veteran. He really knows his shit!
Thanks man
Man, thank you! I have always wanted to see a more in-depth explanation of gas vs piston, differences in lengths, advantages/disadvantages and such between these rifle systems. Could you do a video on the inner-workings of AR and AK rifles and maybe some that are different from those, too? I know there must be videos out there, but you are exceptionally good at explaining things. I would rather learn it from someone like you, who has experience and first-hand knowledge, but keeps it simple for people who are still learning, like me. I respect your opinions.
the problem with a carbine system isn't just that the gas hits the moving parts harder it's that chamber pressure dosent get a chance to drop n let the case shrink back down so basicly it's ripping the case out while pressure is still high and it's also unlocking while the force on the lugs is high so you get more broke bolts sooner more broke extactors more broke cam pins and worn out springs this is mostly the problem with 16 inch carbine gas guns hence why they put the little o ring n rubber piece one the extractor spring it's a band aid to make the gun run reliably 14.5 carbine guns arnt as prone to it but still are more than mid length 16 inch midy 16s are the way to go next to 20inch guns 16 inch midy and 20 inch rifle guns don't need the o ring I actually took mine out so it wouldn't booger up the brass and so the forward asist actually works without hammering it and it also makes it so your extractor will almost never wear out as well...anyways I'm rambling. but there you have it. peace.
deucedeuce22oz yes it can be changed without replacing the barrel. It's easy enough to do or a gunsmith can do it affordably. That being said a 16 inch with a carbine gas system should run fine, will recoil slightly more and wear out parts faster than a 16 inch with a midlength sys. Really just depends on what ur doing. I have that setup and have had zero problems. Honesty not a bad idea to have a backup bolt carrier group anyway. I'd run it and see how it does
deucedeuce22oz no it doesn't matter that much which length gas system you get
jesus christ, use some punctuation
@@goggleboy2464 how can you change your gas system without changing the barrel?
@@anthonygonzales6029 lol ur right. I guess its possible if u get a longer tube plug the hole and move the gas block. But that'd be a nightmare. Especially since a barrel isnt that expensive.
20" AR w/ a VLTOR A5 buffer setup. Specifically an ADCOR 20" upper and the MagPul UBR Gen 2 when it comes out.
I love your videos, dude
Really comprehensive education on this, I watched a lot of your stuff, and I really enjoy your way of articulating information in these videos.
Thanks a lot
And for a 300 Blk SBR (7-11") a pistol length gas system is the most reliable system.
I love the 16 in with a midlength system. My BCM is tuned beautifully. Unfortunately, most manufacturers who sell entry to mid level ARs come with a standard A2 front sight gas block at carbine length, and are 90% of the time WAAAAY over gassed causing your BCG components to take on more wear than normal and causing early failures. I wish they would tune the gas system with heavier buffer or spring before they send it out. I guess that is why you pay so much more for a company with that level of QC
Mid level options that have midlengths I've seen are like:
-S&W M&P 15T
-Sig Sauer M400 Tread
-Springfield Armory Saint
PSA also has options here, priced below the aforementioned items, but everyone has their caveat with them.
Otherwise, aero/BCM build for the same cost ($1000-1200) is probably the way, if you don't mind doing very slightly more than just an off the shelf complete option.
What buffers do you use with a 16" mid length gas system?
I’d say an H1 or lighter...I had a 10.5 rifle in .223 and another 10.5 in 300 blkout. My 300 blkout liked an H1 and the .223 wylde liked a H2.
The number is the number of tungsten weights inside the buffer. Some pistols with suppressors need H3 buffers. Best thing to do is always pay a little more and get a adjustable low profile gas block. Then you can try and tune it before replacing the buffer
Solid video man. You explained everything thoroughly and I really appreciate that. Oh, and thank you for turning me on to Gun District, it's like going Oz for social media and I hope to see it grow and the same for Full 30. It's been a long time coming.
I've learned alot watching your videos. Keep it up brother you're doing a good job.
I really like what you are doing, thank you for Sharing your knowledge but most importantly thank you for your service. Keep the videos coming very good stuff.
Just what I was looking for. Thank you. I'm building my first AR after a lifetime of lever action 30/30 and plan on using it for deer but there is so much junk out there about how this is better or that is better. It's like people have pet gas systems they like and will defend them no matter what, even if it's wrong for what you're trying to do. I hope I'm in the ball park here but I'm getting a 20 inch barrel, rifle length gas system and a collapsible stock(lots of in and out of the trucks). Pretty much a system like you explained there at the end. Thanks.
There's actually two compromises between carbine and rifle length. Intermediate is somewhere between mid-length and rifle length gas. Supposedly it was built to be ideal for 18" barrels.
yes 16inch carbine gas runs hard. BUT THAT EXTRA GAS keeps my colt 100% reliable. especially if its filthy. i do want to see how a rifle length gas runs. how much softer it shoots
I feel the same way.
Rifle length is what the AR is designed for. Much more reliable than a carbine system
I dont think thats a correct analysis of your firearm. The buffer in your carbine is helping your over gassed BCG cycle better.
16” is good .. its what im used to and its the most popular... but its so damn loud.. i dont have a supressor and wont till they are legal without a stamp and registration
@@Stephen-br6il doesn't the over gassing cause you to trade longevity of your bcm for reliability when dirty and added added recoil?
The 20 inch is best for: velocity, fine1/2 minute rear sight value for windage and elevation and 1 1/4 minute front sight value; plus, easier focus on front sight. This configuration is good to 1000 yards from single loading 80 grain SMK’s. Lots of fun.
With what twist rate? That would be a blast!!🤣
My 7.5" with pistol length gas system runs great ...now. I had to add the spikes heavy buffer and BCM enhanced extractor spring kit to make it as reliable as it is now.
Extraction timing is the problem for the need of a spring kit. Too early and the case mouth is still expanding and thus hard to extract. Go to a longer tube instead of the spring exchange because the spring kit masks the problem and decreases reliability.
Thank you! It's good to have a fellow Veteran who gets it. I've shared this vid with my non-veteran friends to help get them to understand. Thanks
Thanks dude. Im an ak guy so i liked how you explained this. My only question i still have is suppressing a rifle length 20"? Surefire rc2. Thanks guy!!
Another excellent video, thank you. I dig the slightly more upbeat/friendly (though still funny/sarcastic) vibes in this one.
Dude ... Very good job, so clear and simple
I like carbine because of the balance too good point
That's is pointless as soon as you get a low profile gas block and a free float handgaurd like most modern rifles have
Thanks for the videos, dude, learned lots especially with your Wolf ammo and Rocketship AR vids. Those older videos got me looking at the gas length vs barrel length thing and read in several places that as far as the violence of action/wear on parts, the key factor is the distance between the gas port and the end of the barrel. Ex: 14.5" barrel vs 16" barrel, both with carbine length gas systems (assuming same size gas port), the 16" would have greater violence/wear because the round is in the barrel for longer past the gas port and directs more pressure through the gas tube back to the moving parts. If the 16" has a mid-length system then the distance between the gas port and the end of the barrel is the same as the 14.5 with the carbine system, so same wear (all other things being equal). The question (finally): Your thoughts on this stuff? Am I just being to much of a geek here and out to lunch? Been looking at how to build out my AR, use the heavy buffer/spring/M16 bcg/etc... Do you think any of this nerdiness is really worth while or I'm just wasting brain bytes? I know I'm building either a 14.5 or 16 and planning on using several of the upgrades you've suggested. Looking to build a never-fail SHTF gun, shoot cheap steel-cased for the practice budget, build a well-rounded set of skills. Thanks for reading through this freaking novel!
Best SNR of almost any video on the subject.
All substance, no pose. Props!
2500 fps is the minimum velocity to achieve ideal fragmentation and tumbling with bullet. This means the 20" barrel maximum effective lethal range is about 190 yards, 18" @ 175yards, 16" @ 160 yards, and 14.5" @95 yards. The reason why the 14.5" losses so much velocity is because the powder is formulated to give optimum velocity between 16" to 24" and this caused the M4 rifle have so much stopping power issues when engaging combatants at longer ranges especially in Afghanistan.
we used xm193 against dudes more than 3 football fields away with great effectiveness. but what I will say is that m855 is fuckin awful at all ranges.
+AregularGuy The M193 bullet still tumbles as below 2500fps and this is good but fragmentation stops at 2300 fps. I am assuming bullet still tumbles below 2300 fps which still makes it lethal. You are right about the dismal performance from M855 bullets and the inconsistency from different NATO countries that compounds it further. M855 only benefit is the same point of impact when shooting different types of ammunition in a M249 and slight increase penetration into different materials.
Joe Blow how about 10.3? It barely reaches 2500 out the nose. And kills guys dead every day.
Stick to m193 or XM193 ammunition (55 gr FMJBT), the m855 is even worst when velocity drops to 2500fps out of the barrel. A 10.3" barrel was never designed as a combat effective length and is primary marketed as a plinking short barrel for those who want something different but if used to defend your life keep the distance close. I assume you mean "kills guys dead everyday" is metal plate targets and not real life and death lethal use.
use a sp ,gold dot or tap and problem solved 77 gr works great allso
Subbed a couple years ago and wanna add a little input too. The M4 was conceived by the Marine Corps and Colt Mfg in '84. Using your eyeball and gutted upper in a stable rest, looking through the barrel and then sights, you'll see that the "Mechanical Zero" of your A2 style sights at a 14.5" sight radius intersects perfectly at 36yds! Super easy...painful to your M4, but they made it happen😁
Awesome and informative video! Thanks. If you’re not an instructor of some sort, you should be. I’m just getting into the AR world and you definitely helped me with my decision on what to buy.
And if you can't decide, do like me and build multiple uppers. Another great thing about the AR platform.
While I don’t have a 5.56, some take away from my 308 is if you are able to afford light weight options for barrels Handguards etc then you can start getting a superb long range rifle that carries much better but it does cost more.
IIRC, gas system length also has to do with dwell time. 16" carbines are over gassed as compared to 14.5". The 16" mid-length gives the same dwell time past the gas port as a 14.5" carbine and a 20" rifle. Just what I have heard. Great video...
FYI they were not "tuning" the length, it was set for a bayonett and worked with. The midlength is the correct size for a 16" barrel bayonett. Carbine fits 14.5", Rifle fits 20"
15:25 ish a lie, they were not designed to push your hand out, just a perk, it's all about bayonetts
Not to dog on you, seeks you've never considered it, but watch one demonstration with a bayonett you'll be convinced
Great video on a really important subject. I have everything from my little 7.5' DPMS kitty cat upper to 20" precision for my 556 AR platform rifles, every upper length in between. They all have advantages and disadvantages, but this is very solid info, especially on the very short barrel uppers. With the 10 to 11" uppers having either piston or proprietary is the ONLY option, as you stated, the regular DI gas guns of these lengths are just to unreliable to consider.
Reid at Valor had some similar comments on 18 and 20" rifles, in fact I picked up an 18" just to mess around with my chrono and various ammo types I have stockpiled, and found the 18 to be a great option for a mid length/rifle hybrid.
Great overall info again based on the operating system and lengths - good discussions in the comments I'll bet this week too.
Chi Com Rig video going up this week ?
Thanks for doing what you do brother !
I'm new to AR-15's and rifles in general. This information that you provided was extremely informative. Being a CA resident, we have some new restrictions about to take place in 2017 that is requiring me to rethink the components of my AR-15 build. I'm building a "featureless" rifle that has a fixed butt stock, no pistol grip, vertical grip, or flash hider in order to make it "California Legal" without having to register it as an "Assault Weapon".
Since my Thordsen FRS-15 buttstock is so damned short, it seems like it makes sense for me to go for a longer barrel and rifle-length gas system since I'm not planning to go on long patrols, hikes, etc.
Just put my 2 cents in. I built a pistol. Extra powered polished recoil spring and a heavy buffer ran perfectly. AAC flash hider. No flash. No recoil. Ran smooth and accurate for about 500. No idea after that because it was stolen. But I will be making a new one. For a close range "truck gun" it was perfect
16" midlength gas system is my favorite.
I like your style and the way you explain things. Very clear and concise. Thanks bro!
Old ass video I’ve seen before but you literally just described the build I’m trying to justify to myself thank you
I like the 20 inch barreled rifle
twist rates next?
He has a twist rate video
Thanks!
Good video, man. What are your thoughts on the mini-14? Good gun? The locals at the range say they're more accurate and reliable than ARs.
good video sir. I really like the 16" barrel and mid-length gas system setup on my ar
A Regular Guy vid first thing in the morning with my coffee.....nice-
As a 6'4" 220lb guy with long arms I really did try to like my carbine length 16 inch gun for the reasons mentioned but even with the stock fully extended I felt all scrunched together with the "M4" style setup.
I'm doing my first build currently and Im doing an M16A4 inspired build minus the knights rail in favor of a drop in MI Mlok. I am a fan of the better ballistic stats. Hopefully the full size gun will feel more balanced for my big ass.
Great video, very informative.
PSA is offering FN CHF barrels
I’m 6’4 220 would you recommend 16in?
Great video man! Ive been looking for this exact info laid out this exact way for like 2 months lol
Thanks for a comprehensive video!
Great stuff here man, keep up the good work.
Great explanation as usual. I went with a 16 mid for my uses. It just seems like the "happy medium" as far as performance with the added plus of not being married to a particular muzzle device
Another excellent, informative video!! Thanks man.
Not an expert on AR15's but I've heard that companies that make carbine length system rifles put in a heavier buffer spring which 'calms' the rifle down, making it softer recoiling and making the wear and tear basically no different. Only in full auto M4's can see the wear being relevant IMO.
I was trained on the M16A2 . So my 20inch is my go too in a survival mode. I love a solid stock. Now for home defence I use my mid-length . Great video
Another benefit to a carbine length gas system is, since it cycles so hard, it can push its way through crud a little better....just a little.
Well, yes, it should cycle any ammo you run through it. What I'm saying is since it cycles so hard, it can push its way through debris a little better.
That's true. Carbine length has systems cycle harder which makes them more reliable in harsher conditions. If the recoil harshness bothers you it's very easy to fix by installing a heavier buffer and extra power buffer spring. By installing the correct buffer and spring you can optimize your carbine to shoot as soft as a .22 I'd personally rather have an over gassed rifle than an under gassed one.
Watching your videos is helping me up my game tactically and to set up my weapons for optimal use in a bad situation. On the first dozen I watched, your age through me off...but I'm used to it now. You tell it like it is and know your stuff. Thanks Rob
Robnord1 I appreciate it man, I certainly do my best to help
Super informative video man!!! Finally someone who explained me this topic. Keep these comin' :-)
So how does a standard vs heavier buffer tube play into all of this?
Pretty good advice. Pretty damn solid. There are some oddball rifles out there, but in most cases people just don't get them running well enough to depend on. That said, my personal favorite is a dissipator. 16" rifle gas, not the mock dissipators that you mainly see out there with a shorter carbine or mid length gas system and non-functioning (gas wise) standard front sight. It takes some work to get them to the level that you'd want to depend on them and I'd NEVER recommend them to most people. There are options that just work better with far less work. Shoots incredibly soft, follow ups are fast, easy on parts, the down side is the work required and its not always easily fixed with stuff you can just bolt on. You're getting into rifles that are more 3 gun territory, however mine functions and there is nothing adjustable to fail or come out of adjustment unlike a 3 gun rifle. I've thought about making a video to explain some of the intricacies of the system as there are many areas that will cause such a thing to fail miserably, but I just don't have time right now. However, my gun is living proof that some times the odd balls actually work. The only time mine has failed was when I tried to make it fail, filled with sand, carbon, bone dry, and on a high enough round count to give any AR15 in such conditions a hard time. Just my two cents on the odd stuff, you covered the rest really well.
my personal choice is a 16" mid length, lightweight profile, chrome lined 1/9 for my home defense rifle. it's the best shooting AR I've ever owned.
It's very common for.300 blackout to run pistol length gas systems. I have one in a 16 inch barrel and it runs just fine. I know there's a huge difference between 5.56 and .300 blackout but just saying that telling someone to walk away from pistol length isn't always possible
Are dissapators just standard carbines with rifle-length handguards? I know the originals had rifle length gas systems but I've heard the new ones have the carbine length.
Beautifully done, you are a prospective
Sergeant Major. keep it up.
Good job on presenting this info young man. .. coming from a Force Recon dude from the 80s-90s, LOL.
OUTSTANDING vid on the AR barrel length urination tournament !!!
THX RG !!
Excellent video. The longer the gas system, the lower the chamber pressure during ejection, the less wear on the bolt carrier group, and the "smoother" shooting the gun. The shorter the gas system, the higher the chamber pressure during ejection resulting in stronger forces that have to be overcome to eject the casing, resulting in more wear on the bolt carrier group, and the harsher shooting of the gun.
The USMC recently went to the M4 replacing the M16a4 for infantry units because they found they only lost 50 meters at range and lighten the load on the infantryman. They are also fielding the MK318 Mod0 or SOST round for combat deployments. The Mk318 was designed to be fired out of the 13.8 inch MK16 SCAR and burn off the powder. The M855 you still get the burning powder flying out the barrel. The Marine Corps isn't going with the Army's M855a1 from what I have been told.
in the Corps we were bangin ammo cans at 600 yds with a 14.5
that’s for pussies. us peasants can hit and neutralize a hostile person charging and firing at us with his AR-15 at 100 yards with a slingshot.
Thank you for your knowledge your channel had explained a lot for us and what we have finalized for purchase. Have a blessed day
A 24" barrel produces lower velocity??? Says who? The longer barrel allows all powder to be burned. Every source I seen indicate that 24-26" barrel produces more velocity NOT less. Why does every reloading manual uses 24" barrel than?
I just got a 24" in the mail. Just cause people said the stupid huge barrel was actually a disadvantage
@Kevin remember he's specifically talking about a 5.56!
@@hatman9531 remember he's specifically talking about a 5.56!!
Extra info:
Powder burn - Longer gas systems will have burnt more powder, making them run slightly cleaner (less heat to burn lube)
Cam Pin wear - Shorter gas systems will be putting the cam pin under more force
Chamber pressure - Longer gas systems will drop the pressure of the chamber, requiring less pressure to extract a case + less chance of a stuck case. Less bolt lug wear too.
Gas port erosion - Less gas port erosion with longer gas systems, since most of the powder is burnt.
I use a 14.5 mid length. Nowadays, most people don't use quad rails + FSB's. I saved 3/4lb ditching my quad rail for an M-lok rail. Yes, you have to move stuff forward, but it's significant weight savings.
Thank you for a lesson that makes sense buddy
Really like the 16inch carbine length I can really tell it's more balanced which is one of the most important things to me the recoil isn't bad at all most guys say they like mid because of how light they are in my opinion rather then getting lighter weaker equipment make your arms stronger.
Thanks man! Nobody talks about the weight. My lady is always wrestling heavy guns so thats always good info.
I've actually been wondering why the 16" rifles exist? Like why is that the minimum legal length for a rifle? Is that the exact length that it will no longer fit under a trench coat?
I know you talked about it in the beginning, Id love to see an opinion video on AK and AR pistols and their applications.
if it's a piston driven rifle it'll work better because usually the excess has and over pressure is bled off. the di variant rifles in pistol length tend to just not do very well. and home defense is the best choice for those guns in my eyes.
One issue most people always overlook, as you did in this video, is matching the bullets potential pressure to the barrel and impingement (be it direct or indirect) length available. It wouldn't make sense to use a high(er) pressure round in a short barrel gun when there is no benefit to doing so. If the user knows they will be shooting within 100 yards (often) with a carbine or shorter type gun, then there is no reason to use high(er) pressure rounds that are meant to have higher velocities and carry its effective pressure farther out to a target. In this case, if you need more stopping power at close range, then it makes more sense to just use a larger bullet instead of a faster bullet with more wasted energy for that specific range, such as large bore pistol rounds over 9mm with special functions (hollowpoint, softpoint, etc). Of course law enforcement/paramilitary personal have several potential ranges they may have to engage in, so finding a happy medium is of course the best option if they need to be using 1 particular gun in all scenarios. ...So ultimately people should learn to match the rounds to the gun they are shooting, and use a gun better suited for the range they need engage in. This is what ultimately saves the gun from extreme wear over time. Efficiency and optimization is key.
Best instructional vid yet. Thank you.
regular geek training does it again!!!!!
Awesome video informative, I've been looking and planing to build one with 18" barrel.
That's what I'm thinking about as well. An SPRish build
Any comments on adjustable gas blocks.? Are those beneficial for a 16" with a carbine system?
Is gas system/barrel length a factor when you're setting up a gun to shoot steel-cased ammo? I'd like to put together a gun that I can shoot a lot for less money but I've heard that some combinations work better with steel than others.
He has a video on how to reliably run steel cased ammo. Basically it comes down to generously lubricating the gun, particularly the barrel extension - which he refers to as "bore bathing." What he suggests works, as I've never had a single malfunction with steel cased ammo - ever. In fact the owner at the range I shoot at told me I'm the only person he's ever seen not have a malfunction with steel cased ammo (which I found hard to believe) and asked me why my gun ran so well with it. I told him about bore bathing and referred him to his video on it.
I dont down any choice in a weapon a person uses , but from civi and military use 20 inch has had better results. Just remember no matter what size barrel you have the more ninja stuff you use you will notice the weight. I prefer 20 with pencil barrel more than heavy or mid weight barrel. If you run burst or auto then yes get a more hefty barrel. Remember you will carry your musket more than you will hopefully shoot it. Chicken Hawk Out
Love your videos bro....you are in my top 3 of CZcams channels....👍👍
Excellent presentations sir, well done. Some of you out there are lucky enough to have all that options for an AR flat form . You guys and gals are lucky enough not to live in California. I have a question about a fluted (LWRC barrel or none LW..) all I know that fluted barrels are design to be lighter, how are the performance of fluted against none fluted. Which one do you think will last, the rounded barrel or the fluted one. I've seen a 800 rounds blew up a regular barrel, haven't seen a fluted tested for this. In your opinion, fluted or none fluted?
Excellent video! Learned a couple things I didn't know, but most was review for myself. I personally own a 16" Rock River Arms LAR-15. Love the thing to death. I threw an ACOG on it and was actually wondering if you might have any recommendations zeroing the thing? I took it out and zeroed at 100yds point of aim/impact with the tip of the triangle and then took it out to 300yds. When I did I did have to adjust a bit and there was also a decent amount of wind at the range I was at so I'm sure that played a small role in the grouping, but aside from all that if you have any tips/tricks/advice etc. and could do an awesome video on it that would be much appreciated!
Awesome video. Answered all the questions I came with
I was wondering about this, the longer barrel more powder was burned due to that more impulse to the bullet it's added, what happened with the friction between the bullet and the barrel ?