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Old 02-10-2011, 04:40 PM   #29
Tony22-250
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Join Date: Jan 2009
Location: Snellville, GA
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Default Re: Im in the AR club finally

Quote:
Originally Posted by zkovach View Post
I believe mine has that triple ring piston
No this is what I mean by gas piston.
http://www.youtube.com/watch?v=mYhNrRb7Cls

Your DPMS is a DI (direct impingment) which means when a round is fired gas goes through a tube in to your upper receiver and bolt carrier group making it dirty. Hence the carrier cleaning tool.
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