This is a high quality BCG. Features: No Aero ‘A’ Logo
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
Black o-ring insert on extractor