BCM

The BCM4 lower receiver group is a versatile, high-quality component chambered for multiple calibers and designed for superior performance. It features a BCM Mod 2 SOPMOD stock, a BCM Mod 4 pistol grip, and a BCM enhanced trigger guard, all contributing to ergonomic handling and user comfort. The fire control system includes the BCM PNT™ semi-automatic trigger, polished with Nickel Teflon for a smooth and reliable pull. The lower receiver is machined from 7075-T6 aluminum forgings and hardcoat anodized per MIL-A-8625F, Type III, Class 2 specifications for maximum durability. A mil-spec diameter 7075-T6 receiver extension is paired with a USGI H buffer, containing one USGI tungsten and two steel weights, optimizing recoil management. The system includes three rear QD sling mounts and a BCM QD sling mount end plate for versatile sling attachment. Additional features include a staked M4 lock nut, a low shelf for RDIAS installation, and compatibility with an Accuwedge for enhanced fit. Fire controls are clearly marked “SAFE” and “SEMI.” As with all BCM rifle components, this lower receiver group is 100% made in the USA and reflects BCM’s commitment to quality and performance.