

Product Description
The FailZero M16 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec M16, M4, or AR-15 upper receivers. All critical components are coated with FailZero’s EXO Nickel Boron technology to provide permanent dry lubricity, extreme durability, and increased wear and corrosion resistance for smoother cycling and easier maintenance.
Product Highlights
- Fully assembled bolt carrier group for quick, drop-in installation in compatible mil-spec uppers
- EXO Nickel Boron coating delivers permanent dry lubricity to help reduce the need for heavy lubrication
- Enhanced wear resistance and extreme durability for hard-use M16/M4/AR-15 platforms
- Improved corrosion resistance with a nickel finish for easier cleaning and long service life
- No-hammer configuration (as designated by the part number) for compatible builds
Specs
- Product Type: Bolt Carrier Group (BCG)
- Platform Compatibility: Mil-spec M16, M4, and AR-15 upper receivers
- Coating/Finish: EXO Nickel Boron; Nickel finish
- Assembly: Completely assembled
- Hammer: Not included
- Brand: FailZero
- Manufacturer Part Number: 009-FZM16/4-01-NH
- UPC: 881314861781
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