PSA Gen4 8" 9mm 1/10 Nitride 7" Lightweight Hex M-Lok Upper – With BCG & CH

Barrel: 8" chrome moly steel barrel. Chambered in 9mm, (9×19), with a 1/10 twist. The barrel is nitride-treated for durability and finished off with a PSA 7" Hex Full Picatinny M-Lok Free Float Rail and a 9mm birdcage flash hider.
Upper: Billet 7075-T6 A3 AR upper is hard coat anodized black for durability. These slick side-upper receivers are made for us right here in the USA.
Bolt Carrier Group: Gen 4 Hybrid 9mm BCG. Nitride-treated 8620 steel, with an enhanced firing pin and external 5.56 style extractor. The bolt carrier group is compatible with most aftermarket fire control groups.