Chrome Moly steel. Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension and a carbine-length gas system - Forged 7075-T6 A3 AR upper - Mil-spec trigger Full-auto profile bolt carrier group. Shot-peened, mil-spec Carpenter No. 158® steel bolt Magpul MOE handguard with M-lok slots - 1.5" nylon sling - UTG A2 style butt stock with storage - Magpul rear sight - "1" Magpul standard capacity mag (30)