M16 Bolt Carrier Group Phosphate/Chrome
- 8620 Steel Carrier
- 9310 Steel Bolt
- Shot Peened
- MPI (Magnetic Particle Inspected)
- HPT (High Pressure Tested)
- Grade 8 Hardened Fasteners
- Extractor insert with Crane O-Ring Upgrade
- Properly Staked Gas Key
- Hard chrome lined Carrier and Gas Key
- Manganese Phosphate Coated
- Bolt Engraved with MPI/9310
