WMD NiB-X AR-15/M16 Bolt Carrier Group NiB-X Black Polished No Hammer

The WMD Guns NiB-X Polished Black M16/AR-15 Full Auto Bolt Carrier Group is manufactured by Military defense vendors to WMD tight tolerance specifications to provide the best bolt carrier group  available. This BCG has been engineered for NiB-X Black coating to provide long life, high reliability and easy cleaning and maintenance. The components of the bolt carrier group have been NiBx coated and polished to reduce fouling.

Specifications:

Bolt 

• Carpenter 158
• magnetic particle Inspected
  
• Mil-Spec Gas Rings
• NiB-X Coated for better wear Protection

Extractor

• heat-treated and hardened per Mil-Spec
• NiB-X coated
  

Firing Pin -

• Manufactured per Mil-Spec
• heat-treated, hardened, chromed
  

Carrier 

• AR-15 / M4 / 16  full auto 
• 8620 Steel
• heat treated and case hardened
• NiB-X coated for durability and ease of cleaning.

Gas Key

• Hardened to Mil-Specs
• grade 8 hardened fasteners
•  NiB-X coated
• Staked per military specifications.

Cam Pin 

• heat treated, hardened per Mil-spec
• NiB-X Coated