KAK Industry Complete Forged AR15 Lower Receiver - KF-15Machined from quality USA produced 7075-T6 forgingsM4 style fire control group pocketType 3 Class II hard coat anodized - deep matte blackUpper receiver tensioning screw includedPictogram selector markings on both sidesAccepts all mil-spec sized lower receiver componentsMilspec Buffer Tube and Carbine bufferKAK lower parts, includes enhanced Billet Trigger Guard M4 Stock and A2 GripModel: KF-15Caliber: MULTIWeight- 33 oz