WMD's Bolt Assembly-Optimized for performance. The bolt was engineered for NiB-X nickel boron coating to provide long life, ease of cleaning and superior locking and unlocking action with barrel extensions.
- Case Hardened 9310, Shot Peened, Magnetic Particle Inspected
- High Performance Extractor, Ejector Springs, and Gas Rings
- Special O-Ring Buffer
- NiB-X Coated Bolt and Extractor
- .450 Bushmaster
