FailZero EXO Nickel Boron 9mm AR9 AR-15 Bolt Carrier Group

Manufactured by Fail Zero
Manufactured by Fail Zero
6 Reviews

In Stock

Orders of non-FFL items will ship same-day if placed before 3:30pm CST. FFL orders will ship within 5 business days if transfer details are provided

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details



This 9mm AR Rifle Carrier Group (BCG) is fully assembled and can fit into most 9mm AR platform rifles and pistols. FailZero 9mm BCG is compatible with Glock or Colt magazines.

  • FZ 9MM BCG is compatible with both Glock and Colt style magazines.
  • 8620 heat treated (same as Mil-Spec) AR Carrier
  • EXO Nickel Boron Technology Coating
  • Staked carrier guide (gas key)
  • 5.56 Extractor
  • Chrome Firing Pin

All key parts are coated with EXO nickel boron technology, which can provide permanent dry lubricity, extremely high durability and improve wear resistance and corrosion resistance. The patented nickel-boron coating reduces friction and improves the overall performance of the rifle.

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.
See More


BrandFail Zero
Caliber Gauge9mm Luger
Carrier FinishNickel Boron
Carrier Material8620 Tool Steel
Carrier StylePistol Caliber Blow Back Carrier
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

6 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

9mm Faul Zero Bolt Carrier Group is a must buy

by -

From the first round it ran perfect and smooth, excellent extractor too.
Thanks for a great product.

Awesome Bolt Carrier Group

by -

It made my AR 9mm super reliable.

She’s a Beaty!

by -

Easy to clean, I prefer this look over black, easy to spot all the gun powder.


by -

Looks great in the gun, and functions great as well.

Good now

by -

The first one I got wasnt staked on the second bolt for the gas key. Plus the hex was stripped out. Had to pay shipping to return item. Not primarys fault, but for a higher end bcg, fail zero's quality control should be better, especially on something so obvious. The replacement was acceptable, but the staking on the same hex bolt was minimal. Not blown away by it so far though. It looks pretty. At least its made in the US.

Silky smooth

by -

Runs great in my EPC-9.