ROSCO 556NATO/300BLK BCG PHOS BLK

The ROSCO 556NATO/300BLK Bolt Carrier Group (BCG) by Rosco Manufacturing is engineered for reliability and durability in demanding shooting conditions. Featuring a phosphate finish with a black coating, this BCG offers enhanced corrosion resistance and smooth operation. It includes a chrome-lined gas key and bolt channel, improving longevity and reducing wear from repeated use.

Designed to meet MIL specifications, the bolt carrier group is full-auto rated with a properly staked gas key to ensure consistent performance. The matched bolt, which is shot peened and magnetic particle tested, incorporates an upgraded extractor for precise lock-up and dependable cycling. This attention to detail makes the ROSCO BCG a solid choice for shooters seeking a robust and well-built component for their 5.56 NATO or .300 Blackout platforms.