PSA 8.5" Pistol Length 300AAC Blackout 1:7 Nitride 7" Lightweight M-Lok Upper With BCG & CH – 5165449777

Barrel: Chambered in 300AAC Blackout with a 1:7 twist rate, M4 barrel extension, and a pistol gas system this barrel is nitride treated for accuracy and durability. It is finished off with a PSA 7" Lightweight M-Lok rail, .750" diameter low profile gas block, and an A2 flash hider.
Upper: Forged 7075-T6 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.
Each upper is assembled to order with care, and test fired.