Mitchell Defense Enhanced AR-15 Bolt Assembly 5.56x45mm NATO, 300 AAC Blackout

Overview

The Mitchell Defense Enhanced AR-15 Bolt Assembly is engineered for precision, strength, and endurance in 5.56x45mm NATO, .223 Remington, and 300 AAC Blackout platforms. Machined from Carpenter 158 aerospace-grade alloy, the bolt provides exceptional thermal stability and durability in harsh environments. Each unit undergoes 100% magnetic particle inspection (MPI) to detect surface and subsurface imperfections and is high-pressure proof-tested to verify structural integrity under extreme loads. The component features an ArmorLube coating to minimize friction, enhance wear resistance, improve cycling consistency, and provide corrosion protection. It is outfitted with SP4-coated high-temperature, low-friction gas rings to maintain a superior gas seal, alongside a phosphate-coated extractor designed with a higher friction coefficient to ensure consistent, dependable extraction and ejection across thousands of rounds.

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