FailZero .458/.450 Bolt Assembly

A .458/.450 Nickel Boron Bolt Assembly for AR15, M16 and M4 Carriers

Price: $99.99

Out of stock


This fully assembled and NiB coated (.458/.450) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers and will run in your .458 SOCOM and/or .450 Bushmaster.  EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion resistance.  By reducing friction this bolt assembly will make for easy cleanup and improve the performance of your rifle.

Nickel Boron treated parts include:

  • EXO Coated Bolt – Case Hardened, Shot Peened and MPI (Magnetic Particle Inspected)
  • EXO Coated Extractor (fully assembled)
  • All other components are Mil-Spec

Additional information

Weight 0.25 lbs