BLEM - Nickel Boron Bolt Carrier Group (5.56mm / .300 BLK) - High Polish

Please note: this is for a "blem" unit. A blemished unit is still 100% fully functional but has a blemish or imperfection of some kind. Blem units are not eligible for returns or exchanges.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. 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 Forward Controls
• 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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