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AR15 Semi-Auto BCG - No Hammer

A completely assembled, ready to install Semi-Auto Bolt Carrier Group with no Hammer
Classic Finish
Finish Options

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers.  All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both wear and corrosion resistance.  Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.

Nickel Boron treated parts include:

  • Bolt & Extractor (5.56/.223 compatible)
  • Bolt Carrier
  • Extractor
  • Cam Pin
  • Carrier Key
  • Firing Pin



Saturday, 27 February 2016
absolutely the best i have 5 ar15, all nickel boron at the time i thought it was the best then fail zero comes along, now i have 2 fail zero and i will have 5 buy the end of the year. my only question is what do i tell my wife, why i'm swapping out her nickel boron after convincing her that it was the best, what do i do with the 5 that will be sitting on my shelf soon, 500 rds so far and no oil easy clean less cabon build up runs cool, just what the dr. ordered even the box it came in is cool thx for a great product

RT @PrimaryArms: 6 lbs. overall weight. 3.5 lb. match trigger. .223 Wylde barrel. Ambi Charging handle and enhanced furniture. DM to find o…

by FailZero