Chambered for the high-velocity 5.56x45mm NATO (223 Rem.) cartridge, the selective fire SCAR™ 16’s innovative gas-operated, short stroke piston system reduces fouling for greater reliability. The SCAR 16 system features three user-interchangeable, freefloating, cold hammer-forged MIL-SPEC barrels with hard-chromed bores and A2-type flash suppressors. Fully-ambidextrous operating controls instantly adapt the SCAR 16 to any user. The receiver-integrated MIL-STD 1913 optical rail plus three accessory rails enable mounting of a wide variety of tactical lights and lasers. The sidefolding, polymer stock is fully adjustable for comb height and length of pull, and is colored matte black or authentic USSOCOM Flat Dark Earth.