No... I watched to the end as well. I guess we will all have to 'discover' what size PVC we need to start with. Didn't say or show if it was Schedule 40 or Schedule 80 PVC, but my guess is 40. Oh well, will take measurements myself and go from there. Nice to see just what was used for everything. Would loved to have seen how effective it is.
@@halweiss8671 It's meant for an airgun. If you watch some of other vids on his channel, it shows him building his own airgun. The suppressor is designed specifically for that gun.
Well if you know anything about firearms and temps, you should know this is good for about 10 shots max of a .22 at best. Can’t really call it a suppressor for anything else
Oil filters make great silencers...The longer the quieter...The female threaded inlet, will fit specific threaded nipples...You secure the nipple to your piece, I silver soldered mine, on an HP .22, extended barrel, after removing some of the sleeve, over the barrel...It's cast or pot metal, melts easy too, so be careful...Then just shoot the first round through for the end hole, and you have a replaceable silencer...Sounds like a cap gun...Longer filters even quieter...
Im 57, and my father made them from a Briggs and Stratton lawn mower mufflers, basically the threading back then was the problem the muffler already came threaded, but, they worked better than the ones you can actually buy
I started playing paintball in 1986, back then we had to make all of our own accessories, I made silencers exactly like this. They worked well for paintball, I would never try them on a real firearm.
@@teddyrasputin3850 as big as the hole was it would have to be a 100 caliber . And with no baffle in front to slow down the gas it won't work because the hole is to big in the front
Beautiful work as usual. Works very well with high pressure gases like n-gas, etc. Absolutely love your design. Nice work. +1 a chamber inside a chamber with inlets.. for which the gases will go into as the projectile passes w/the high pressure gases directly behind it.. this works in physics. nice work. A+
I like the concept of using whatever you have or can buy at the hardware store. The design is kind of like a glass pack muffler, doubt it would reduce the decibels much. I do like your hacksaw frame built from rebar.
Check this one i just made, even simpler but it works because of the smooth internals and the corresponding volume/area changes. Plus the simple action of a end of a (right kind of) bottle acting as a orifice plate.
Great idea but those materials will almost surely melt and/or catch fire at much above a .22lr when exposed to repeated, rapid firings (note there was no attempt to validate its capabilities in actual use). The most fragile suppressor material I've yet to see is aluminum; there's a valid reason.
Its not meant for rapid fire ........ and it wont work with a 22 lr either. The out put hole needs to be much smaller to hold back the gasses / noise. Nothing about this will work. I get greats results using plastic coke bottle with my 22 lr.
That stuff doesnt easily catch fire when held in actual fire, I believe the issue will be like "barrel droop" after a couple hundred rounds by overheating.
Tri bolt I remember now,the actual thread cap was steal, the spring loaded locking divots were brass,as the paint came off and we were able to see the yellow brass color anyway again very cool
This design could be improved by making more room for more of the media(cotton or something synthetic?) and changing it to fine steel wool, which would last much longer.
I've got a damn pellet gun in .177 cal and that sumbich is LOUD! Louder that all of my 22LR's for sure. Only 1 pump and CRACK... which kinda sucks LOL. I think it's about 1,300 FPS which is more that common 22LR but it's close in either case. I think THIS item would suit it very well and I may try something similar to this as I think it'll work fine for an air rifle. Nice little tutorial vid and like many others have stated, killer rebar hacksaw!
It wouldn't make any real difference other than sending the blast sound down range like a blast forwarding device (BFD). As tight as the packing is between the ported tube and the outer chamber it wouldn't quite or "silence" any combustion fired device. You may as well tape a go-kart muffler to your muzzle if you want to go to jail for attempting to create a suppressor that has no reduction in sound.
It’ll work on a 22 caliber if you shoot bullets below about 1100 fps. The hardest part would be keeping the tube perfectly straight, in-line with the bullet travel. Keeping the bullet from making any contact with the inside tube, deflecting it. Perfect alignment could be a problem with an inner tube that small. Bullets over 1080 or 1100 fps you’d get a secondary boom coming from the bullet breaking the sound barrier.
Not really, because there is no isolation between the inlet and outlet to control the difference between escaping gas ahead of the sonic pop. This would only act like a glass pack muffler to some degree, not a suppressor. The reason an adapter from the barrel to a screw on oil filter actually works is the small hole shot through the end allows the expanding gas to stay trapped long enough to become neutral as the projectile goes through the small hole at the end. This open PVC contraption has little to no purpose.
All the holes in the inner tube let the gasses out. Yes, same as a muffler. You know, The same fellow that invented the gun silencer invented the car muffler.
@@user-bd5md5cm2j PVC is good to 385 degrees before it deforms, the barrel will get hot faster than the PVC because it doesn't retain heat well. This is assuming that it's attached to a 22 Cal single shot rifle, and not a fully automatic of extreme firing capabilities.
I did something like this (not as detailed as this one) and it worked for the first shot. I didn't secure the dampening layer (I used sponges) and on the 2nd shot it all went flying out. Told myself I'd try again but just got busy with other stuff. Also my module was twice a thick and probably a 15" long.
It is probably worth mentioning that civilian firearms are illegal where this dude lives. All they got over there are air guns, and most of them are home made. This is a tutorial on how to build a suppressor for such a gun. If you believe putting one of these on an actual firearm is a bad idea, you a correct. It is.
Yes I was waiting for the demo. Ive always felt that the hardest part to a silencer was getting the extended threaded barrel. Where do those come from?
I think the hardest part is finding a barrel thread to fit exactly Like it's supposed to I think plumbing pipes were built Completely different from gun barrels so people wouldn't do this Search high and low for the correct barrel thread and third they just don't make it you have to buy a gun barrel or produce it yourself
Prescription pill bottles the kind that can snap together clear orange colored with holes drilled in center, insert scotch brite or steel wool wrapped around a pencil which is used as a guage for hole size electric tape and super glue them as a monocore baffle inserted into a maglite flash light body for the can.. tightly wrapping duct tape on the end of 22 barrel so the can fits really tight when put on and as long as you dont mag dump a ruger 10-22 all you really hear is the reciever ejecting the casing but if you rapidly empty your mag its only good for about 4-5 rounds then heats up and fudgea up alignment and you're monocore pill bottle baffle is done,, of course this is all hypothetical and ive nwver made a surppressor for a ruger 10-22
put a pepsi bottle plastic over the barrel it knocks down the sound 60 percent,i live in the country and have an old lady across the street,that can't hear me snuffing coyotes in the early morning ,so this device will probably work on a 22 lr,its what i shoot at the worthless dogs killing everyones chickens
PVC gets really pliable when you ad heat, gonna act like an al dente noodle when it gets hot. We used to use a simple plumbing torch to make our own bends in electrical conduits
First off...ONLY way it wouldn't explode on first shot is if ONLY USED ON A .22LR. Then there's not going to be any appreciable sound reduction overall because it's open ended. Need a wipe or cap to trap the gasses or it'll simply be a redirection device. The sound may be attenuated from the shooter's perspective but that's only because it was redirected.
For a 22. Rifle A 20oz mountain dew bottle filled with 00# steel wool and duct taped over the barrel would "probably" work really well, especially with Subs. Don't test this idea!! But remember it
Dude that's crazy, so my friend and I was back like I'm taking 2004,early 05, made a suppressor with pvc, a metal pipe, inside brushed,cold steel, light but, it was the more pricy metal they had at the hardware store, washers, nevertheless, my buddy john, actually uses Dremel tool funny you're actually isn't yours as well, and cut slits big enough to tap the washers, in the plastic tube, carefully without cracking the plastic, them out a coating of industrial crazy glue pretty much,then, but the metal tube over that with, heat resistant foam epoxy,which worked extremely well actually for keeping the get from causing it to crack or explode melt, ect, then put the metal to over that, of course bonded it again for that though, we wrapped, gorilla like vent tape all around the cylinder, after the epoxy foam dried, then put the, outter, metal cap over it again, with the industrial, glue,with the foam apoxy at the ends,then drilled,holes for venting at the front of the cylinder, for venting,starting small, then, widening the holes up at the outer,and then,added a thread cap with the little divots,the outer cap had threading and there were little spring loaded buttons that clamped into the the divotd over the threading,so it clamped in better you usually see those in high end parts or some times auto mobile parts and way it works really well for extra tightness keeps it very snug with the threads and the sting loaded little things I can't think of the too of my head what they are called nevertheless worked excellent still has it last I knew 4 years ago,it does loosen over time of course and doesn't suppress like it did,at first though I remember,it made a likea hiss snap sound over and actual bang and the echo as we didn't have subsonic rounds at the time still was minimal and didn't echo for very long,still seeing this made me all nostalgic lol,great video
Am i the only one who watched till the end just to see if he was gonna try and put that thing on a real firearm?
I was hoping he would at least put it on one of his home made air guns.
Maybe it’s for a blowgun.
No... I watched to the end as well. I guess we will all have to 'discover' what size PVC we need to start with. Didn't say or show if it was Schedule 40 or Schedule 80 PVC, but my guess is 40. Oh well, will take measurements myself and go from there. Nice to see just what was used for everything. Would loved to have seen how effective it is.
…he wouldn’t ACTUALLY video ‘firing’ it…NOT ON Yt.
@@halweiss8671 It's meant for an airgun. If you watch some of other vids on his channel, it shows him building his own airgun. The suppressor is designed specifically for that gun.
Anyone else waiting to see it blow up???
Yep waste of time.
I was thinking the exact same thing. This thing will probably blow up.
The rebar hacksaw was the coolest part of the video😎🤘🏻
It's a common hand tool here in the Philippines brother
Yep I was also impressed with that I'd like to make one for myself.
@@tatakilocano was that blade on that rebar hacksaw actually made out of ground down rebar? It didn't look like a normal hacksaw blade.
Yes sir it is.
I thought the same thing when I saw the hacksaw😂😂
A moment of silence for all the people who thought this was intended for a real gun.
👌
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Well if you know anything about firearms and temps, you should know this is good for about 10 shots max of a .22 at best. Can’t really call it a suppressor for anything else
It's obviously for a vacuum cleaner! Which we can all appreciate. lol.
Neither was a coke bottle
Oil filters make great silencers...The longer the quieter...The female threaded inlet, will fit specific threaded nipples...You secure the nipple to your piece, I silver soldered mine, on an HP .22, extended barrel, after removing some of the sleeve, over the barrel...It's cast or pot metal, melts easy too, so be careful...Then just shoot the first round through for the end hole, and you have a replaceable silencer...Sounds like a cap gun...Longer filters even quieter...
Im 57, and my father made them from a Briggs and Stratton lawn mower mufflers, basically the threading back then was the problem the muffler already came threaded, but, they worked better than the ones you can actually buy
I used Volkswagen Beatles chrome tips.
Disposable muffler, what a great idea !!!
Rock Wool is great for sound reduction. Used in sound deadening applications.
I started playing paintball in 1986, back then we had to make all of our own accessories, I made silencers exactly like this. They worked well for paintball, I would never try them on a real firearm.
Wouldn't hurt to try. (At-least you might get to see something blow up).
yep, PVC & scotch brite pads
Well that’s good because that’d be a felony.
@@michaelh3992 FOR PAINTBALL? Sorry they would not even waste time on that one....
yea too much muzzle pressure thing will blow up
It's actually amazing with some effort how effectively can silence lots of stuff , just for short use probably can make fairly effective.
I made one similar about a year ago for a cracked barrel .22 air rifle. It works damn good for squirrels, rabbits, and raccoons.
The atf👀
@nellyc1066 HE SAID HE PUT IT ON A AIRGUN THAT IS LEGAL
Why in the world are you shooting a rifle with a cracked barrel? Are you insane?
Assume they meant a break barrel?
I love foreign films. I can't wait to see the one where it melts. 🙂
Maybe he’ll post a video of his eye doctor picking plastic outta his eyes lol.
Made plenty from old Water bottles, steel wool and duct tape, no melting. 🙂
@@zer0deaths862 interesting. What caliber was it on, how effective was it and how man rounds did you get out of it?
@@teddyrasputin3850 as big as the hole was it would have to be a 100 caliber . And with no baffle in front to slow down the gas it won't work because the hole is to big in the front
@@garyjohnson801a 100 caliber...nice
Beautiful work as usual. Works very well with high pressure gases like n-gas, etc. Absolutely love your design. Nice work. +1
a chamber inside a chamber with inlets.. for which the gases will go into as the projectile passes w/the high pressure gases directly behind it.. this works in physics. nice work. A+
Now I MUST make one of those...
rebar hacksaw!!
I like the concept of using whatever you have or can buy at the hardware store. The design is kind of like a glass pack muffler, doubt it would reduce the decibels much. I do like your hacksaw frame built from rebar.
Check this one i just made, even simpler but it works because of the smooth internals and the corresponding volume/area changes. Plus the simple action of a end of a (right kind of) bottle acting as a orifice plate.
The blade is a ground down piece of rear also
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Oil filter.
You would be surprised at how well they work ,I made one similar for a 10-22 it surprised me especially sub sonic ammo
Apparently designed for use with a water pistol.
Wasn't that a blowgun? ;)
Great idea but those materials will almost surely melt and/or catch fire at much above a .22lr when exposed to repeated, rapid firings (note there was no attempt to validate its capabilities in actual use). The most fragile suppressor material I've yet to see is aluminum; there's a valid reason.
who cares if if only lasts 50 shots? it cost $15 lol
Its not meant for rapid fire ........ and it wont work with a 22 lr either. The out put hole needs to be much smaller to hold back the gasses / noise. Nothing about this will work. I get greats results using plastic coke bottle with my 22 lr.
That stuff doesnt easily catch fire when held in actual fire, I believe the issue will be like "barrel droop" after a couple hundred rounds by overheating.
@@jimmyjohnson7041 kinda what I thought, it looks like a 1" pipe for the inner tube (the pipe with the holes drilled in it)
I liked how he stuffed nylon batting in there lol 😮
Tri bolt I remember now,the actual thread cap was steal, the spring loaded locking divots were brass,as the paint came off and we were able to see the yellow brass color anyway again very cool
I like the dual use of his tools.
Awesome. I don't know about using it as a silencer but I will make one but use it for a barrel shroud. Thank you.
This design could be improved by making more room for more of the media(cotton or something synthetic?) and changing it to fine steel wool, which would last much longer.
You're right steel wool is the best packing material
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Fiberglass mat is used in some stuff
This design could be improved by un-designing it altogether.
Steel wool burns, you know?
Suppressor for what? A nerd blaster?
GREASE GUN
Back in the day made them out of 2 or 3 liter bottles would work for a couple shots they would make a gun with power quite
Ang galing, salamat sa pagbahagi at may paggagatayahan ako
galing ah..pwede na yan ipa order sa mga may kursunada budi..
Thee old bare foot clamp .. haven’t see that in years😊… but for real. Man your dope ✊🏽💯
How many shots can you fire before the plastic melts?
For sweat kind of gun is that suppressor? The barrel looks too big
I've got a damn pellet gun in .177 cal and that sumbich is LOUD! Louder that all of my 22LR's for sure. Only 1 pump and CRACK... which kinda sucks LOL. I think it's about 1,300 FPS which is more that common 22LR but it's close in either case. I think THIS item would suit it very well and I may try something similar to this as I think it'll work fine for an air rifle. Nice little tutorial vid and like many others have stated, killer rebar hacksaw!
It worked perfect for my MARAUDER PCP pistol a lot less noise now
Looks like a silencer from a 1970's dirt bike
I would like to hear it on a 22LR and how much difference it makes.
None!
It wouldn't make any real difference other than sending the blast sound down range like a blast forwarding device (BFD). As tight as the packing is between the ported tube and the outer chamber it wouldn't quite or "silence" any combustion fired device. You may as well tape a go-kart muffler to your muzzle if you want to go to jail for attempting to create a suppressor that has no reduction in sound.
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@@jonathanhudson4623 If it has no reduction in sound, then it's not a suppressor. It's just an "extension".
Stacked baffles inside would work well. Make it as long as necessary.
The barefoot and home made rebar hacksaw. I'm dead. 🤣
that's cool bro, i'm curious if you could add more baffle, or an end cap, i guess you could tape over the end and poke a hole,
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Put a baby bottle nipple on the end, great for air rifle
This guys going to put SilencerCo out of business.
Hell, empty water bottle and steel wool works real good,too. For a 22.
But how effective is it?
Muy bien hecho pero tienes que probarlo
It’ll work on a 22 caliber if you shoot bullets below about 1100 fps. The hardest part would be keeping the tube perfectly straight, in-line with the bullet travel. Keeping the bullet from making any contact with the inside tube, deflecting it. Perfect alignment could be a problem with an inner tube that small.
Bullets over 1080 or 1100 fps you’d get a secondary boom coming from the bullet breaking the sound barrier.
Not really, because there is no isolation between the inlet and outlet to control the difference between escaping gas ahead of the sonic pop. This would only act like a glass pack muffler to some degree, not a suppressor. The reason an adapter from the barrel to a screw on oil filter actually works is the small hole shot through the end allows the expanding gas to stay trapped long enough to become neutral as the projectile goes through the small hole at the end. This open PVC contraption has little to no purpose.
What happens when it gets hot ? Dropping.....
All the holes in the inner tube let the gasses out. Yes, same as a muffler. You know, The same fellow that invented the gun silencer invented the car muffler.
@@user-bd5md5cm2j PVC is good to 385 degrees before it deforms, the barrel will get hot faster than the PVC because it doesn't retain heat well. This is assuming that it's attached to a 22 Cal single shot rifle, and not a fully automatic of extreme firing capabilities.
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I have a .22 MAG with threaded barrel. Maybe I'll throw something together like this and see if it makes it any quieter. Cool DIY!
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Need to load subsonic rounds. Kinda makes magnum pointless
I don't think it would take the pressure from the .22 mag.
@@stevecarter1273 I should be able to buy subsonic rounds no? 🤔
@@bakerrichardson6555 Only 1 way to find out 😉
Bro wont the silencer decrease power of Toy air gun?
I did something like this (not as detailed as this one) and it worked for the first shot. I didn't secure the dampening layer (I used sponges) and on the 2nd shot it all went flying out. Told myself I'd try again but just got busy with other stuff.
Also my module was twice a thick and probably a 15" long.
Please tell me you're not in the US.
Rock wool ! Handles the heat, and used in recording studios for sound deadening !
ATF : PVC PIPE IS A FIREARM
🤣🤣🤣
send your dog away before doing this. save his life.
I think you may have meant "AFT" lol!
ATF:But it isn't, therefore not protected under the 2A....but we only deal with firearms
@@dallasburnworth I think you meant AGT Americans Got Talent lol
No, I did too. Was curious to see how quiet it was going to be. And to see I how it would handle the heat. 🤔
Good idea for urban air guns if you can't find one for your rig.
It is probably worth mentioning that civilian firearms are illegal where this dude lives. All they got over there are air guns, and most of them are home made. This is a tutorial on how to build a suppressor for such a gun. If you believe putting one of these on an actual firearm is a bad idea, you a correct. It is.
Just posting that you have built something like this in the US, even for an airsoft would be a bad idea.
@@Buffatestuff Beta cuck comment
Its a cute novelty item.
Super 👌
Just hit the play to see the airsoft toys. Is the a sprinkler?
A cap on the end drilled out over sized and a tire repair patch rubber cemented on the inside as a wipe would probably compliment the look completely
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Yes I was waiting for the demo. Ive always felt that the hardest part to a silencer was getting the extended threaded barrel. Where do those come from?
I think the hardest part is finding a barrel thread to fit exactly Like it's supposed to I think plumbing pipes were built Completely different from gun barrels so people wouldn't do this Search high and low for the correct barrel thread and third they just don't make it you have to buy a gun barrel or produce it yourself
The feds are drooling over this one lol😂😅
Really love the colour. At least you're getting views! And that's the main thing these days. All the best.
At close distance there is no crack of the faster long rifle bullet breaking the sound barrier.
I bet 22 Lr would be ideal for something of those materials regardless that's pretty darn Cool
W wish he would have test fired it.
airsoft maybe... it's not capped.
What air gun is this most effective on? The Benjamin bull pup?
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Use stainless Brillo pads to take the heat away
Thanks for the heads up...wont waste my time...
Prescription pill bottles the kind that can snap together clear orange colored with holes drilled in center, insert scotch brite or steel wool wrapped around a pencil which is used as a guage for hole size electric tape and super glue them as a monocore baffle inserted into a maglite flash light body for the can.. tightly wrapping duct tape on the end of 22 barrel so the can fits really tight when put on and as long as you dont mag dump a ruger 10-22 all you really hear is the reciever ejecting the casing but if you rapidly empty your mag its only good for about 4-5 rounds then heats up and fudgea up alignment and you're monocore pill bottle baffle is done,, of course this is all hypothetical and ive nwver made a surppressor for a ruger 10-22
Yeah' like this is really going to survive. Next please
Still think it would be interesting on let's say .22 caliber or so. I wonder how much it reduces the sound. Great build though.
put a pepsi bottle plastic over the barrel it knocks down the sound 60 percent,i live in the country and have an old lady across the street,that can't hear me snuffing coyotes in the early morning ,so this device will probably work on a 22 lr,its what i shoot at the worthless dogs killing everyones chickens
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The inner pipe's diameter is likely too big for it to be effective.
Might work on a .22. Right?
besides being illegal, would this not melt..?
And there you have it. A melted blue blob on the end of your firearm. Or maybe a torch😂
I usually start my campfire with more conventional materials
Is ther a test video Wher it get used?
Is that for a super soaker?
This item would best be used on a slam fire shotgun. Paint it Black and put it on the end. I think that might just be a nice little adjustment.
Think this would be more effective on the end of an exhaust pipe than on a weapon.
For airsoft right?
PVC gets really pliable when you ad heat, gonna act like an al dente noodle when it gets hot.
We used to use a simple plumbing torch to make our own bends in electrical conduits
It's intended for air rifle brother but if used on firearms definitely it will melt
I've seen hard metal silencers melt.
So how well do you really think this will function?
Don't think it's meant for a real firearm. Isn't even remotely the right size for any standard firearm.
I want to see it in action!
WHy do I get the feeling this would be like holding on to a big old firecracker saying watch this
I actually saw something similar built from plumbing hardware. It was entirely ineffective.
Full auto rated?
I'd like to try that out but I don't know who would get there first.. The aft or the range officer. 😂
Now all he needs is a firearm to test and certify this mod - to find out if it can handle the incredible pressures at depth. I mean, IN depth.
Yeah the plastic would melt upon firing on a real gun. I made mine out of aluminum. Works great, but I'm going for steel next. 👍🤠💯
Won’t it melt on the first magazine?
I don't think that would hold pressure. But you can engrave your form 1 number with a pocket knife....
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ATF reading comments and saving addresses 😂
can you make a video for building a hacksaw
hey it might work for 2 shots then melt?
First off...ONLY way it wouldn't explode on first shot is if ONLY USED ON A .22LR. Then there's not going to be any appreciable sound reduction overall because it's open ended. Need a wipe or cap to trap the gasses or it'll simply be a redirection device. The sound may be attenuated from the shooter's perspective but that's only because it was redirected.
That's good enough for the atf to go rogue on a dog n owners
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So does it work or not?
how does it attach to the gun
The foot vise and rebar hacksaw are what made me think this is legit.
Thus would probably work for a paintball marker or a pellet rifle.
Even a .22 would melt this.
For a 22. Rifle A 20oz mountain dew bottle filled with 00# steel wool and duct taped over the barrel would "probably" work really well, especially with Subs. Don't test this idea!! But remember it
steel wool would burn
@@mikebunch3189 yea eventually but it's not a big deal its disposable
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Airsoft?
Did that filling MELT??
I clamped mine to the barrel it wont move
I'm digging his hack saw
We need test of concept! I'm concerned the PVC pipe won't handle repeated muzzle pressure and start cracking or worse. Fun video, however.
Sirr saan makakabili nang 10 mm steel ball
I wonder if it would even stand up to 22 subsonic pressures? Maybe just launch lead and plastic into your target...
Lawn mower muffler ?
There's 8 minutes I'll never get back😅
ok lets talk about the rebar hacksaw .that could make money.
Magaling trabaho! This is how the NPA & HUCKS make silencers.
Dude that's crazy, so my friend and I was back like I'm taking 2004,early 05, made a suppressor with pvc, a metal pipe, inside brushed,cold steel, light but, it was the more pricy metal they had at the hardware store, washers, nevertheless, my buddy john, actually uses Dremel tool funny you're actually isn't yours as well, and cut slits big enough to tap the washers, in the plastic tube, carefully without cracking the plastic, them out a coating of industrial crazy glue pretty much,then, but the metal tube over that with, heat resistant foam epoxy,which worked extremely well actually for keeping the get from causing it to crack or explode melt, ect, then put the metal to over that, of course bonded it again for that though, we wrapped, gorilla like vent tape all around the cylinder, after the epoxy foam dried, then put the, outter, metal cap over it again, with the industrial, glue,with the foam apoxy at the ends,then drilled,holes for venting at the front of the cylinder, for venting,starting small, then, widening the holes up at the outer,and then,added a thread cap with the little divots,the outer cap had threading and there were little spring loaded buttons that clamped into the the divotd over the threading,so it clamped in better you usually see those in high end parts or some times auto mobile parts and way it works really well for extra tightness keeps it very snug with the threads and the sting loaded little things I can't think of the too of my head what they are called nevertheless worked excellent still has it last I knew 4 years ago,it does loosen over time of course and doesn't suppress like it did,at first though I remember,it made a likea hiss snap sound over and actual bang and the echo as we didn't have subsonic rounds at the time still was minimal and didn't echo for very long,still seeing this made me all nostalgic lol,great video