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Old November 19, 2012, 08:48 AM   #7
kraigwy
Senior Member
 
Join Date: June 16, 2008
Location: Wyoming
Posts: 9,469
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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