This high quality Aero Precision Mil-Spec 556 Phosphate BCG (bolt carrier group) is a valuable addition to your AR15 build.

Features:

• M16-cut carrier
• Machined from 8620 steel
• Carrier has forward assist serrations
• Mil-Spec phosphate coating
• Properly staked gas key
• Chrome lined gas key and bolt channel
• 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