PSA-18 10.5" Quad Rail Upper w/ BCG & CH

Barrel: 10.5" 4150V Chrome Moly vanadium steel, nitride coated and chambered in 5.56 NATO with a 1 in 7" twist. The carbine length gas barrel is finished off with a quad rail handguard with rail covers, a .750 Front Sight Base, and a PSA 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.