AIM v2 Nitride BCG 5.56 .223 Reduced Friction MPI Bolt Carrier Group

Features:

• 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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