BLEM PSA Gen4 10.5" 9mm 1/10 Nitride 9" Lightweight M-lok Railed Upper - With BCG & CH

Barrel: 10.5" chrome moly steel barrel. Chambered in 9mm, (9x19), with a 1/10 twist. The barrel is nitride treated for durability and finished off with a Palmetto State Armory 9" Lightweight 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 enhanced firing pin and external 5.56 style extractor. The bolt carrier group is compatible with most aftermarket fire control groups.