DealThe Matrix Arms 5.56 Stripped Lower Receiver has been precision CNC machined from a MIL-SPEC 7075-T6 aluminum forging. Compatible with MIL-SPEC lower parts kits on the market, select your favorite and start building!Features:7075-T6 forged aluminumHardcoat anodized blackSafe / Fire safety selector markings Marked 'Multi' caliber Flared magwell Weight 14 oz from Primary Arms (Product M556-SC) |