DPMS 5.56/300BO Phosphate Bolt Carrier Group

Mil-Spec Bolt Carrier Group OverviewThis mil-spec Bolt Carrier Group is proudly made in the USA and built for durability and reliability. The Carpenter 158 steel bolt is shot peened, high-pressure tested, and magnetic particle inspected, ensuring it meets rigorous quality standards for dependable performance. The auto-profile carrier is phosphate coated externally and chrome lined internally, providing smooth operation and enhanced corrosion resistance. The chrome-lined, bar-stock gas key is sec