Lantac M-Spec 5.56/.223 Bolt Carrier Group Nitride QPQ

The Lantac M-SPEC 5.56/.223 Bolt Carrier Group in QPQ Black Nitride delivers milspec precision with a focus on reliability and durability. Precision machined to milspec dimensions, the carrier is a full auto style design with increased mass, crafted from 8620 steel and heat treated, then hard turned and ground to exact internal tolerances. The QPQ nitride finish provides enhanced corrosion resistance and sustained performance under demanding conditions. The bolt itself is machined from Carpenter 158 or 9310, shot peened and hard turned/ground to strict military specifications, ensuring consistent extraction and reliability across engaged cycles. A key feature is the CP-R360 domed head cam pin, precision machined from 17-4PH stainless steel, hand polished and hardened to H900, which reduces friction and wear within the upper receiver for smoother operation and extended service life. The M-SPEC line is designed for budget builds where quality and reliability remain paramount, offering robust components without compromise. This BCG is ideal for shooters seeking solid performance in 5.56/.223 setups, delivering dependable cycling, improved longevity, and a clean, low-maintenance finish that stands up to hard use in the field or at the range.