Rosco 556 NATO/300 BLK Phosphate BCG

Enhance your AR15 with the Rosco 556 NATO/300 BLK Phosphate BCG. This bolt carrier group features a phosphate coating and chrome-lined components, ensuring durability and reliability. Full-auto rated and MIL-spec, it boasts a properly staked gas key and MP-tested matched bolts with upgraded extractors for optimal performance. Designed with input from military and consumer feedback, this BCG is built to withstand tough use and deliver extreme accuracy.