Luth-AR BC-A-223C Full Assembly Bolt Carrier Group .223/5.56 AR-15 - Manganese Phosphate

The Luth-AR BC-A-223C is a complete, fully assembled bolt carrier group (BCG) built for .223 Remington and 5.56x45mm NATO AR-platform rifles. Designed as a drop-in component for mil-spec AR-15 and M16-pattern upper receivers, this BCG ships ready to install with the bolt, carrier, gas key, cam pin, firing pin, and retaining hardware all assembled at the factory.

The carrier and bolt are finished in manganese phosphate (commonly abbreviated MGP or MGPHO), a heat-treated and corrosion-resistant coating that produces the classic matte black appearance favored on mil-spec AR components. The manganese phosphate finish also helps the BCG hold lubrication and resist wear during repeated cycling in field, range, and defensive use.

Engineered for reliable extraction, ejection, and lock-up across a wide range of ammunition, the BC-A-223C is a quality replacement or upgrade part for hunting, home defense, duty, and recreational AR-15 builds. Drop it into your upper, pair it with a quality barrel and gas system, and head to the range.