PSA 11.5" Carbine-Length 5.56 1/7 Nitride 10.5" Lightweight MLOK Upper w/ BCG & CH

Barrel: 11.5" 4150V Chrome-moly vanadium steel barrel, nitride treated for accuracy and durability, and chambered in 5.56 NATO with a 1 in 7" twist. This carbine-length gas barrel is finished off with a PSA 10.5" Lightweight M-Lok Rail, a low profile gas block, and an A2 style flash hider. Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt Carrier Group: Bolt made of mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.