The Colt Bolt Repair Kit for M4/AR-15 from Colts Manufacturing delivers a trusted, ready-to-use solution for keeping your rifle at peak reliability with a complete assortment of essential bolt components, including the extractor, ejector and safety detent spring, as well as the ejector and extractor spring assembly, extractor pin, ejector spring pin, and firing pin retaining pin. This black kit is designed to fit AR-15 and M4 platforms, offering a durable, precise grouping of parts that enthusiasts and professionals rely on for field maintenance, range work, or routine upkeep. By integrating Colts renowned engineering and quality control, the kit supports consistent bolt operation, smooth extraction, and dependable chamber function, helping to reduce downtime and maintain accurate, safe cycling. Whether performing a routine rebuild, addressing bolt wear, or stocking spare components for a busy shooting schedule, this kit provides the exact pieces needed to restore or upgrade your bolt assembly without guesswork. With Colts manufacturing heritage backing it, you gain a cohesive, compatible set of parts that aligns with your rifles performance expectations and long-term value.