Toolcraft Black Nitride BCG AR10 308 OCKS Bolt Carrier Group

OCKS Screws properly staked at Toolcraft

The Toolcraft Black Nitride BCG AR10 / 308 Bolt Carrier Group – Black Nitride is a durable, U.S.-made component designed for use in AR-10 platforms chambered in .308 Winchester and related cartridges within the 308 parent family. Manufactured with a 9310 steel bolt and an 8620 steel carrier, this BCG is fully compatible with DPMS-pattern rifles and offers reliable cycling for a variety of AR-10 builds.

The Black Nitride finish enhances surface hardness, corrosion resistance, and lubricity, making this BCG easier to clean and longer lasting under high-volume use. The bolt is MPI-inspected for integrity and includes a machined extractor with a Mil-Spec O-ring, ensuring proper case retention and extraction. The carrier features a properly staked 4140 steel gas key with OCKS screws and forward assist serrations to ensure full functionality in DPMS-compatible receivers.

Toolcraft is an established OEM for the U.S. military and several top rifle manufacturers, known for producing high-quality bolt carrier groups trusted by professional users. All Toolcraft BCGs purchased through us are covered by a 100% hassle-free lifetime warranty, ensuring long-term reliability and customer confidence.

This model is compatible with most calibers in the .308 Winchester cartridge family.