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AR15.COM
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4/2/2010 7:03:16 PM EDT
Hi all!

Does anyone have any info/experience with these systems?

http://gaspiston.com/

Are they quality?

Thanks!
4/2/2010 7:25:14 PM EDT
[#1]
I haven't kept up on them, but I know there are a lot of threads about them in the piston forum.  You may get some responses from people that have them.  If I recall they have only been out for about six months or so.

http://www.ar15.com/forums/forum.html?b=3&f=126
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