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Posted: 8/17/2012 10:01:21 PM EDT
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have a gas system? or no?
thanks for the help |
| Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. |
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Quoted: Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? |
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Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? DI uses locking lugs (AR bolt\bolt head.) Less weight Less recoil "Smoother" (blowback bolt moves back with full barrel pressure - DI Bolt moves back when barrel pressure is lower.) |
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Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? To start with, DI means the gun can have a lighter carrier. A lighter reciprocating mass means smoother, steadier shooting, and the whole weapon is lighter. Also, a locked breech, suppressed weapon is much quieter. In full auto, a gas operated carbine also tends to be more controllable, with one poster mentioning that his gas operated AR was as smooth as an MP5 in full auto (which is saying something!). On the other hand, Ron had to do a lot of tinkering to get the guns to work consistently, mostly because of how dirty commercial 9mm ammunition is, and because commercial 9mm is loaded for short barreled, recoil operated pistols, not longer barreled gas operated guns. The gunk problem seems to have been more difficult to deal with (from my read) than the mechanics. I am planning to buy one of Ron's 9mm uppers eventually, but I may wind up with one of his Tokarev uppers before a 9mm... That wish list of mine is not very brief! |
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Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? You don't need one, but if you shoot one, you will probably want one. Shooting a blowback gun is like driving a Yugo and shooting a gun with a "delayed" action (gas, roller locked, rotary bolt) is like driving a luxury car... |
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Quoted:
Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? You don't need one, but if you shoot one, you will probably want one. Shooting a blowback gun is like driving a Yugo and shooting a gun with a "delayed" action (gas, roller locked, rotary bolt) is like driving a luxury car... My first (and so far only, darn it) experience with a machine gun was with an MP5... Compared to the MP5 my 9mm carbine snd SBR do remind me of a well worn Chevy Cavalier (as in "how did that thing pass state inspection?") next to a new Mercedes. Oh yes.... That DI 9mm upper just jumped several places on my wish list, just from thinking about it. |
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Quoted:
Quoted:
Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? You don't need one, but if you shoot one, you will probably want one. Shooting a blowback gun is like driving a Yugo and shooting a gun with a "delayed" action (gas, roller locked, rotary bolt) is like driving a luxury car... My first (and so far only, darn it) experience with a machine gun was with an MP5... Compared to the MP5 my 9mm carbine snd SBR do remind me of a well worn Chevy Cavalier (as in "how did that thing pass state inspection?") next to a new Mercedes. Oh yes.... That DI 9mm upper just jumped several places on my wish list, just from thinking about it. I have only shot three fully automatic weapons...a 10.5'' LE full auto AR15, a MP5, and a Thompson. The MP5 was so smooth with absolutely no recoil at all. The Thompson sucked (but still fun), and the AR was meh. The control ability of the MP5 was so so so sweet. |
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Quoted:
Quoted:
Quoted:
Gas operated 9mm ARs exist, but they are so far less than "mass market ready." Ron Williams has been working on a direct gas 9mm (to accompany his successful .45s, Tokarevs, etc.), and he's had plenty of details to work out. With that said, there is a place for a gas operated 9mm carbine. Check out the 9mm DI Update thread in the Rimfire and Pistol Calibers forum for details. Cliff's Notes about why I would need a DI 9mm instead of straight blowback? To start with, DI means the gun can have a lighter carrier. A lighter reciprocating mass means smoother, steadier shooting, and the whole weapon is lighter. Also, a locked breech, suppressed weapon is much quieter. In full auto, a gas operated carbine also tends to be more controllable, with one poster mentioning that his gas operated AR was as smooth as an MP5 in full auto (which is saying something!). On the other hand, Ron had to do a lot of tinkering to get the guns to work consistently, mostly because of how dirty commercial 9mm ammunition is, and because commercial 9mm is loaded for short barreled, recoil operated pistols, not longer barreled gas operated guns. The gunk problem seems to have been more difficult to deal with (from my read) than the mechanics. I am planning to buy one of Ron's 9mm uppers eventually, but I may wind up with one of his Tokarev uppers before a 9mm... That wish list of mine is not very brief! 7.62 Tok is fun in an AR. I got a 16" barrel with a pistol length gas system from Marty, six or seven years ago. Biggest problem was the magazine issue. Modified Sten mags worked OK, but it was a pain to modify them. CZ24 mags work great, but I had to modify an SNS magblock to work with the CZ mags. PPs43 mags apparently also work well (with an appropriate adapter), but I haven't tried them. Then (if the barrel has the right rifling twist) there's the option to use .308 rifle projectiles in your reloads. |
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