WMD Guns, Bolt Assembly, Nib-X Finish, .223 Remington/556NATO

WMD’s 5.56 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.
5.56 NATO/223 Remington
NiB-X Coating
Case Hardened 9310
Magnetic Particle Inspected
High-Performance Extractor