Quad Rail w/Sig Kit
5.56 NATO or .300 AAC Blackout cal., pistol length gas system, 7 1/2 (5.56 NATO) or 10 1/2 (.300 AAC Blackout) in. chrome moly high-end barrel, A2 flash hider, laser etched M4 feed ramp flat-top T-marked upper receiver, forged lower receive...