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November 18, 2012, 01:32 PM
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#1 |
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Senior Member
Join Date: July 12, 2007
Posts: 161
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When you build your AR.. what gas system do you use?
Just wondering as I'm preparing to start my first build which will be a midlength.
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Criminals and the mentally ill should NOT own firearms. Background check everyone. |
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November 18, 2012, 06:11 PM
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#2 |
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Senior Member
Join Date: January 28, 2012
Posts: 215
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Many suggest carbine for shorter than 14.5", midlength for 14.5" and 16", and rifle for 18" and 20".
What are you building? |
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November 18, 2012, 06:18 PM
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#3 |
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Senior Member
Join Date: June 18, 2009
Location: NorthWest USA
Posts: 1,243
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djcantr has good advice though there is debate whether carbine length gas or midlength is better for 14.5"
Since you want a midlength I'd recommend a 16" barrel which is perfect for that gas length and will avoid the need to permanently attach the muzzle device. |
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November 18, 2012, 07:58 PM
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#4 | |
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Senior Member
Join Date: April 8, 2000
Location: On The Road, somewhere in the good ol' US of A.
Posts: 1,109
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Quote:
 I have two 16" ARs, one with carbine length gas system, one with midlength. They both function perfectly. IIWY, I'd go with a 16" with midlength gas system.
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Violence is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and valorous feeling which believes that nothing is worth violence is much worse. Those who have nothing for which they are willing to fight; nothing they care about more than their own personal safety; are miserable creatures who have no chance of being free, unless made and kept so by the exertions of those better than themselves. Gary L. Griffiths, Chief Instructor, Advanced Force Tactics, Inc. (Paraphrasing John Stuart Mill) |
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November 19, 2012, 02:21 AM
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#5 |
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Senior Member
Join Date: July 12, 2007
Posts: 161
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I meant.. the actual system..
Do you use the Direct Impingement or Gas Piston system? Im trying decide which I would prefer.
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Criminals and the mentally ill should NOT own firearms. Background check everyone. |
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November 19, 2012, 02:58 AM
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#6 | |
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Senior Member
Join Date: September 9, 2008
Location: Woooooshington
Posts: 1,794
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Quote:
Reason 1. There's no real across the board agreement on what GP system is best, so there's no interchangeability. If you need parts, you have to go to the mfg that made your GP upper and hope that, years down the line, they still make those parts. Reason 2. I don't like GP ARs. I got nothing against GP, just not on an AR. 
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Shoulder Drive Nicholson Club |
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November 19, 2012, 09:48 AM
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#7 |
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Senior Member
Join Date: June 16, 2008
Location: Wyoming
Posts: 8,616
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Direct Impingement has been working quite well for over 40 years.
Dont see many piston ARs at High Power Rifle Matches for a reason.
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Kraig Stuart CPT USAR Ret USAMU Sniper School Oct '78 Distinguished Rifle Badge 1071 |
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November 19, 2012, 05:10 PM
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#8 | |
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Senior Member
Join Date: June 18, 2009
Location: NorthWest USA
Posts: 1,243
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Quote:
Then why did you say "I'm preparing to start my first build which will be a midlength"?  That of course implies DI gas system so you lead us down the carbine length, midlength, intermediate length, rifle length pathway. Anyway, my first answer stands, I'd go with a 16" barrel using a midlength direct impingment gas system. For the same reasons kraigwy and creeper said. And for cost and simplicity over piston. Last edited by Quentin2; November 19, 2012 at 05:16 PM. |
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