This Armalite M15 5.56 Pistol features an 6" double lapped chrome lined/chrome moly barrel, receiver extension, arm brace, ambidextrous safety, Raptor charging handle, flash hiding compensator, mil-std 1913 rail, two-stage trigger, 7075-T6 aluminum upper and lower receiver, folding stock, and an anodized finish. Armalite M15 5.56 Pistol 6" M15P6