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6.8 Black Nitride BCG

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  • $ 109.95


The QPQ (Quench Polish Quench) process is an advanced Black Nitriding process, which augments the standard Nu-Tride process. Enhancing corrosion resistance involves a secondary polishing operation, followed by re-oxidation to produce a lustrous black finish as well as case hardening the steel.  Tests show significant reduction in wear to components subjected to black nitride over standard parkerizing methods.
Features: 
  • 6.8
  • Full Auto Capable
  • 9310 MPI and HPT Tested bBolt
  • Case Hardened 8620 Carrier
  • 4130 Gas Key
  • Grade 8 Hardware With Proper Staking
  • Gas Key Sealed With Permatex No.3
  • 8740 Hard Chrome Firing Pin
  • Black  Nitride Treated For Reduced Friction And Increased Longevity 
  • Proudly Made In The U.S.A
  • Unconditional Lifetime Warranty