AIM v2 Nitride BCG 5.56 .223 Reduced Friction MPI Bolt Carrier Group
- 8620 Tool Seel Enhanced Radius design (Angle Cut) Carrier with inside and out Black Nitride Treatment
- Carpenter 158 Steel MPI Bolt with inside and out Black Nitride Treatment
- Extractor has Black Insert and O-Ring upgrade
- Billet Machined 4140 Steel Gas Key
- Grade 8 Fasteners
- Military Specification Gas Key Staking
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