The BCM AR-15 Complete Lower Receiver is forged and machined from 7075-T6 Aluminum. The receivers are Hardcoat Anodized per MIL-A-8625F, Type III, Class 2 specifications. Features a Staked M4 Lock Nut, USGI H Buffer (1 USGI Tungsten, 2 Steel), Low Shelf for RDIAS installation, and Low Self for Accuwedge use. Fire Controls are marked Safe and Semi. Also features several BCMGunfighter upgrades including: The BCM Enhanced Trigger Guard, BCM QD Sling Mount End Plate, BCM PNT Trigger (Polished Nickel Teflon), BCM QD Sling Mount End Plate, BCM Pistol Grip Mod 4, and a BCM Stock Mod 0.