Complete Nickel Boron Full Auto Bolt Carrier Group. 5.56/223 & 300 Blackout BCG. The nickel boron coating is excellent, extremely low friction and easy to clean.
- M16 Carrier-8620
- Bolt-9310
- MPI Tested
- Upgraded Extractor Spring with o-ring
- Properly staked gas key
Made in the USA by a quality manufacturer.