Aero Precision 5.56 Bolt Carrier Group Black Nitride

The Aero Precision 5.56 Bolt Carrier Group is a high quality bolt carrier group with a Full Auto M16 style carrier. Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) that is Shot peened and HPT tested/MPI marked with a properly staked gas key.

Finish: Black Nitride
Caliber: 5.56