PSA 16" 5.56 NATO 1:7 Midlength SS Pencil 15" M-Lok Freedom Upper With BCG and CH

Barrel: 416R stainless steel pencil profile barrel.  Chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a mid-length gas system. The barrel is finished off with a PSA 15" Lightweight M-Lok free float rail, .625" low-profile gas block, and an A2-style flash hider. Upper: Forged 7075-T6 aluminum A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer. Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.