Features:

• M16-cut carrier
• Machined from 8620 steel
• Carrier has forward assist serrations
• Black Nitride Finish - advanced lower friction coating that minimizes the need for lubricants and cleaning
• Properly staked gas key
• 5.56 Bolt is machined from Carpenter 158 tool steel
• Shot peened
• HPT tested/MPI marked
• Black o-ring insert on extractor
• High quality BCG