WMD Guns AR-15 5.56 / .223 Nickel Boron Bolt Assembly

Optimized for performance, the WMD GunsA(R) AR-15 5.56 / .223 Nickel Boron Bolt Assembly was designed to give you a lifetime of easy cleaning and superior locking and unlocking action. Featuring case hardened 9310 steel construction, this bolt assembly is shot peened and magnetic particle inspected with a high-performance extractor, ejector springs, gas rings, and special O-ring buffer that helps ensure your rifle is cycling like it's supposed to. Further, the corrosion-resistant NiB-X nickel boron coating makes cleaning after the range much easier and ensures your rifle cycles shot after shot.