This complete AR-15 lower receiver assembly from Bravo Company features a BCMGUNFIGHTER stock Mod-0 and pistol grip, enhanced trigger guard and Mil-Spec receiver extension. The receiver is forged 7075-T6 aluminum with Mil-Spec Type III Class 2 anodizing. It has a low shelf for RDIAS install and Accuwedge use, and an un-notched hammer compatible with 9mm use. Features: Receivers machined from aluminum forgings 7075-T6Receivers hardcoat anodized per MIL-A-8625F, Type III, Class 2Staked M4 lock nutUSGI H buffer (1 USGI tungsten, 2 steel)Low shelf for RDIAS installationLow shelf for accuwedge useFire controls marked safe and semiBCM QD sling mount end plate