AERO AR15 5.56 BCG W/9310 BLK NTRD

This high quality bolt carrier group is a valuable addition to your AR15 build.

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