Piston-Driven AR
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Piston systems do not make gas go away. They merely vent it in different locations. Here, the gas is venting directly behind the front sight, as it is meant to. Photo from Gun Digest Book of the AR-15, Vol. III
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Here are 20 photos of HOT AR-15s from Patrick Sweeney's Gun Digest Book of the AR-15, Vol. III. Who says ARs are ugly?
Let the drooling commence. Great pics of some amazing AR’s. Wouldn’t have minded seeing a representitive from RRA, though.