Elevate the performance of your AR-15 chambered in .458 SOCOM or .450 Bushmaster with the Brownells M16 .458 SOCOM/.450 Bushmaster bolt carrier group. Engineered for excellence, this bolt carrier group is meticulously crafted to ensure optimal functionality and reliability in your rifle. The bolt head is constructed from robust 9310 steel, which is subjected to rigorous heat treatment and shot peening processes, resulting in a finish that stands up to the demands of high-pressure firing. Complementing this, the carrier is forged from 8620 steel, which is hardened post-machining to enhance its durability and longevity. This comprehensive assembly includes all essential components - a precision engineered firing pin, a cam pin and a firing pin retaining pin, ensuring seamless integration and operation within your firearm. Whether you're a seasoned shooter or a dedicated enthusiast, the Brownells M16 .458 SOCOM/.450 Bushmaster bolt carrier group is designed to deliver consistent, high-performance results, making it an indispensable upgrade for your AR-15 platform.

Subjected to magnetic particle inspection
The construction of the extractor comprises a rubber insert and a spring
Enhanced corrosion resistance provided by the black nitride finish
Gas keys that are torqued and staked

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