Three Gas Piston 5.56x45 Rifles

Three Gas Piston 5.56x45 Rifles 



We take a look at Three Gas Piston 5.56x45 AR15 style Rifles
The Ruger 556, SIG 556 and LWRC M6 A2 Carbine

Ruger 556 Gas Piston AR15
http://www.youtube.com/watch?v=SchCHc...

SIG 556 SWAT
http://www.youtube.com/watch?v=4ooiPz...

LWRC M6A2 Carbines
http://ar15buyersguide.com/Articles.p...

AR15 Buyers Guide
http://AR15buyersguide.com

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