Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage


  • Complete AR15/M16 Bolt Assembly
  • Nib-X Nickel Boron finish
  • Machined from Carpenter 158
  • Includes extractor, ejector and gas rings


  • Self-lubricating finish drastically reduces maintenance and oiling
  • Extremely hard surface will withstand thousands of rounds of use
  • Carbon buildup is easily cleaned thanks to the slick surface

AR-15, Issue:10, Page:012

Carpenter 158 construction.  Nib-X Nickel Boron finish.  Fits mil-spec AR15/M16 carriers and barrel extensions.


In Stock

Caliber: 22 Caliber (.223-.224)

Finish: Nickel-Boron