BRN AR-15/M16 5.56mm Bolt Carrier Group, MPI, Nitride

The Brownells M16 5.56 Bolt Carrier Group (BRN AR-15/M16 5.56mm BCG, MPI, Nitride) features:

• Finish: Black Nitride
• Carrier Type: M16
• Caliber: 5.56x45 NATO
• Material: Steel (bolt 9310, carrier 8620, extractor 4340, gas key 4130, cam pin 4340, firing pin 8740)
• MPI tested bolt
• Made in USA

Compatibility: AR-15 and M16 platforms chambered in 5.56x45 NATO, 223 Remington, or 300 AAC Blackout

• Included components (as part of a standard BCG): bolt, bolt carrier, gas key, firing pin, cam pin, firing pin retaining pin

This BCG is designed to work easily and reliably in AR-15/M16 rifles and is finished in Black Nitride for corrosion resistance.