Aero Precision 5.56 Bolt Carrier Group, Complete – Phosphate

The Aero Precision Bolt Carrier Group is a high-quality addition to your AR-15 build. Finished with durable MIL-SPEC manganese phosphate with chrome lined internal and gas key. A properly staked gas key prevents gas leakage that can lead to short stroking. Each assembly is magnetic particle inspected to ensure it is free from defects that can lead to premature failures. MIL-SPEC dimensions ensure correct component function and reliability.

Features:

• Laser engraved Aero Precision “A” logo
• 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