This is CMMG's complete bolt carrier group for the 5.56 M16 and can be used as a drop in replacement part in your M16 or AR-15 and in new builds. It Includes not only the bolt and bolt carrier, but the gas key, firing pin, cam pin, firing pin retaining pin and firing pin spring.

The carrier has a manganese phosphate finish and they are magnetic particle inspected. The gas carrier key is properly staked.

All items are Brand New w/ Full Manufacture Warranty


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  • Model: RR-CMMG55BA419
  • Manufactured by: CMMG

This product was added to our catalog on Tuesday 06 August, 2013.

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