High Polish Nickel Boron Bolt Carrier Group (5.56mm / .300 BLK)
Made to our exacting quality standards and magnetic particle inspected, our M16-profile nickel boron bolt carrier group is here to offer substantially enhanced reliability, easier cleaning, and better lubricity (including a lower overall need for lubrication) compared to a standard mil-spec manganese phosphate bolt carrier group. For added long-term reliability, our gas keys are staked using OCKS screws (Optimized Carrier Key Screw) which feature sharp, deep, effective knurling to ensure superior staking.
Attributes
- Compatibility: M16/ M4 / AR-15 Using Direct Gas Impingement (not for use in piston guns)
- Calibers: 5.56x45mm NATO / .223 Remington / .300 AAC Blackout
- Profile: Full Auto Style Carrier w/ Properly Staked Gas Key
- Bolt: 9310 Steel
- Carrier: 8620 Tool Steel
- Coating: Nickel Boron
- True Mil-Spec dimensions
- 4130 steel gas key
- Staked with OCKS Screws from Michiguns
- 4140 steel extractor and cam pin
- Hard chrome ground 8740 steel firing pin
- Magnetic particle inspected
- Made in the USA. Proudly.
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