American Made Parts for American Rifle Builders


FailZero, 450 Bushmaster AR-15 Bolt Carrier Group - No Hammer, EXO Nickel Boron Coated

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Not all Nickel Boron is created equal and FailZero is the undisputed pioneer of Nickel Boron technology. When failure is not an option, you can depend on FailZero.

The .450 Bushmaster Bolt Carrier Group is fully assembled and drop-in ready for most MIL-SPEC upper receivers. All critical parts are coated with EXO Nickel Boron technology providing permanent dry lubricity, extreme durability and increased wear and corrosion resistance. This patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.

Features and Specificaitons

  • Bolt Finish: Nickel Boron
  • Bolt Material: Carpenter 158 SteelBrandFail Zero
  • Caliber: 450 Bushmaster
  • Carrier Finish: Nickel Boron
  • Carrier Material: 8620 Carpenter Steel
  • Carrier Style: M16 Bolt Carrier
  • High Pressure Tested: Live Fire Tested
  • Magnetic Particle Inspect: Magnetic Particle Inspected
  • Platform: AR-15
  • Nickel Boron treated parts include:
    • Bolt & Extractor (.450/.458 compatible)
    • Bolt Carrier
    • Gas Key
    • Cam Pin
    • Firing Pin


**NOTE: BCG may ship with either a dark FailZero logo or a subdued lasered FailZero logo.