LBE Unlimited AR-15 5.56 Bolt Carrier Group, Nickel Boron - M16BCG-NIB

The LBE Unlimited M16BCG-NIB Complete BCG 5.56x45mm NATO in a nickel boron finish delivers a high-performance bolt carrier group designed for reliable operation in AR platform rifles, featuring a durable 8620 steel construction with a silver nickel boron coating that reduces friction and simplifies long-term maintenance. This complete bolt carrier group is engineered to withstand the demands of full-auto rated use, providing smooth cycling, improved wear resistance, and consistent lockup for trusted rifle function across a variety of configurations and conditions. The M16BCG-NIB combines a precise fit with a corrosion-resistant finish ideal for outdoor environments, ensuring dependable extraction and chambering while contributing to easier cleaning and longer life between service intervals. Ideal for shooters seeking enhanced reliability in semi-automatic and select-fire platforms, this BCG supports optimal gas operation, clean bolt travel, and repeatable shot-to-shot performance. Whether upgrading an existing upper or building a performance-oriented rifle, the LBE Unlimited complete BCG offers a robust, metal-to-metal interface and a proven balance of strength, durability, and smooth cycling to support accurate, repeated shooting in demanding field and range applications.