AR-15 6.5 Grendel Type II Bolt Carrier Group

Features

• Heat-treated 8620 hardened steel carrier
• Magnetic-particle inspected 9310 steel bolt
• Shot-peened with correct gas-key torqueing and staking
• Extractor installation includes rubber insert and spring
• BCG finished with black-nitride coating
• Bolt face depth is .136"
• Includes bolt, bolt carrier, gas key, firing pin, firing pin retaining pin, and cam pin