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Old June 17, 2013, 09:38 AM   #72
Junior member
Join Date: September 27, 2011
Posts: 382
everyone !
i have tried to find the specifics of every piston operating systems of every AR-15/M4 design and the only one i can find the specs on is this one,

not a very good view, but this design is in my OPINION one of the best piston systems yet !

all these piston makers that advertise in gun magazines tout their system but very few show their specific design, even when i go to their web site they do not show it specific parts LWRCI has a slide show of how theirs work.
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