This high-quality bolt carrier group is a valuable addition to your .224 Valkyrie/6.8 SPC 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 Mfg: Aero Precision
