Bear Creek Arsenal M16 Bolt Carrier Ground Nitride 556 223 Wylde 300 Blackout 350 Legend

The Bear Creek Arsenal 5.56/300 BLK M16 Bolt Carrier Ground - Nitride in bulk packaging delivers a robust, MPI-inspected bolt carrier group designed for AR-15 platforms, offering compatibility across calibers including .223 Wylde/5.56 NATO, .300 Blackout, and .350 Legend. Constructed with a steel frame and a Parkerized bolt finish paired with a Black Nitride carrier finish, this BCA unit provides durable wear resistance and smooth cycling under a variety of conditions. The standard carrier style ensures reliable operation within standard AR-15 builds, while the 9310 steel bolt material is engineered for longevity and consistent locking and extraction performance. A staked gas key enhances longevity by securing gas control components, and the included MPI testing underscores a commitment to precision and reliability. Whether upgrading a duty rifle, building a versatile sporting AR, or refreshing a trusted platform, this bolt carrier group helps optimize timing, gas seal, and cyclic reliability. With Bear Creek Arsenal's reputation for quality machining and durability, you gain a dependable, easy-to-integrate solution that supports multiple calibers without sacrificing performance or reliability during high-volume or precision shooting scenarios.