The KAK Industry carrier completion kit for AR-15 is a premium kit designed to complete your bolt carrier group assembly with all the necessary components for reliable operation. This kit includes essential parts such as the firing pin, cam pin, bolt gas rings and retaining pin, ensuring your AR-15 runs smoothly and efficiently. Constructed from high-quality materials, each component is designed for long-lasting durability and consistent performance in a variety of shooting applications. Whether you're building a new rifle or replacing parts in an existing setup, the carrier completion kit provides the necessary tools to ensure your AR-15 operates at its best. It's a must-have for anyone looking for reliable function and precision in their firearm. AR-15 BCG cam pin made from 4140 steel, Swiss turned, heat-treated and finished with a hard chrome coating Mil-Spec AR-15/M16 5.56 BCG firing pin machined to Mil-Spec standards from high-quality 8740 steel, precision ground, properly heat-treated and chrome-plated for maximum durability and corrosion-resistance Mil-Spec phosphate-coated retaining pin provides enhanced corrosion-resistance Fits all AR-15/M16 style carriers for seamless compatibility and reliable function across various platforms Includes cam pin, firing pin and retaining pin for complete assembly