Colt 223/5.56mm AR High Wear Parts Kit (M4) SPK403980

The Colt SPK403980 is a genuine, mil-spec Original Equipment Manufacturer (OEM) high-wear parts repair kit configured to maximize the operational lifespan of your AR-15 or M4 rifle. Unlike basic bolt repair kits, this comprehensive package bundles critical high-wear springs and pins for both the Bolt Carrier Group (BCG) and the fire control lower receiver assembly. It provides vital components prone to fatigue over high round counts, including a replacement extractor, heavy-duty trigger/hammer springs, and gas rings. Manufactured by Colt’s Manufacturing to exact military tolerances, this kit restores reliable cycling, crisp trigger reset, and positive ejection. It serves as a necessary preemptive maintenance collection for competitive shooters, tactical instructors, and field armorers alike.