Description
The Rosco 556 NATO / 300 BLK Bolt Carrier Group (BCG) in phosphate black offers unparalleled reliability and performance for modern carbine shooters. Featuring a phosphate coating with a chrome-lined gas key and bolt channel, this full-auto rated BCG is designed to meet MIL specifications. Each unit is properly staked and matched to the barrel, ensuring optimal accuracy and durability. With shot peened, MP-tested bolts and upgraded extractors, the Rosco BCG delivers dependable performance even under extreme conditions. Engineered with input from military end users, this BCG is built to withstand rigorous use and provide the precision you need on the range or in the field.
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