AERO AR15 5.56 BCG BLK NITRIDE

This high quality bolt carrier group is a valuable addition to your AR15 build. – Features: – M16-cut carrier – Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) – Carrier has forward assist serrations – Black Nitride Finish- advanced lower friction coating that minimizes the need for lubricants and cleaning – Properly staked gas key – Shot peened – HPT tested/MPI marked – Black o-ring insert on extractor – High quality BCG