WMD NiB-X Nickle Boron M16 Style Bolt and Carrier Group & Hammer Upgrade Kit

WMD Guns drop-in Nickle Boron M16 Style Bolt and Carrier Assembly/Group (BCG) is developed to increase reliability and ease of cleaning and maintaining your M16/AR-15 type rifles. The bolt carrier is M16 (full auto) stlye. 

• Drop-In AR-15 BCGs to increase reliability and ease cleaning and maintenance.
• Bolt – Carpenter 158 case hardened, shot peened and magnetic particle inspected.  Manufactured to Government drawings.  Mil Spec gas rings. NiB-X coated (40% more wear resistant than Chrome).
• Extractor – Manufactured, heat treated, hardened, per Government drawings.  Black extractor buffer and heavy duty spring.   NiB-X coated.
• Firing Pin – Manufactured, heat treated, hardened, Chromed and certified per Government drawings.
• Carrier – M16 style carrier (heavy weight), 8620 material, heat treated and case hardened.  Manufacturing tolerances on inside diameters tightly controlled.  NiB-X coated for durability and ease of cleaning.
• Gas Key – Hardened to USGI Specifications and attached using grade 8 hardened fasteners.  Permatex No. 3D Aviation Form a gasket Type III Sealing Compound per MIL-S-45180 used on assembly. NiB-X coated.  Staked per military specifications.
• Cam pin – Manufactured, heat treated, hardened and certified per Government drawings.  NiB-X Coated.
• Hammer - Manufactured, heat treated, hardened and certified per Government drawings.  NiB-X Coated.