Finish: Black Hardcoat Anodize Caliber: 7.62 x39mm Barrel: Diamondback Barrels 7.62, 16 , Medium, 4150 CrMov, Black Nitride, 1:9.5 RH Gas System: Carbine-Length BCG: Shot-Peened, Magnetic Particle Inspected Mil Spec 8620 Carrier Upper: A3 Flattop Forged...