FailZero EXO Coated AR-15 Bolt Carrier Group

Manufactured by Fail Zero
SKU: 009-FZAR15-01-NH
MPN: FZ009-FZAR15-01-NH
Manufactured by Fail Zero
69 Reviews

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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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. The AR-15 Bolt Carrier Group is fully assembled and drop-in ready for most MIL-SPEC upper receivers. All critical parts are coated with EXO Nickel Boron technology providing permanent dry lubricity, extreme durability and increased wear and corrosion resistance. This patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.

NOTE: BCG may ship with either a dark FailZero logo or a subdued lasered FailZero logo.

  • AR-15 cut carrier
  • Magnetic particle inspected
  • Live fire tested
EXO Nickel Boron treated parts include:
  • Bolt, extractor, bolt carrier, cam pin, carrier key, and firing pin
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Bolt FinishNickel Boron
Bolt MaterialCarpenter 158 Steel
BrandFail Zero
Caliber Gauge5.56 NATO
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleAR-15 Bolt Carrier
High Pressure TestedLive Fire Tested
Magnetic Particle InspectMagnetic Particle Inspected

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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

Nice BCG


Nice doing business with Primary arms. As a gunsmith I never worry about customer service with PA.

Fail zero BCG


As always primary arms is the best... My fail zero BCG was great. Shipped promptly and a great price... PA is my go to for every build.

Great BCG


At a great price...

Love Fail Zero BCG


Awesome BCG. They had it at a great price. I should have bought 2. I love Primary Arms they have great prices and fast shipping. Thanks

Nice :)


AWSOME product

Love it


Bolt carrier group is nice and tight, functions flawlessly and I will be getting another soon for my s&w ar15. Primary arms was a measure to deal with, and teleported to my door in just 3 days halfway across the country

Quality products and services


Building my current project I have searched for quality and best deal combined for many of the parts. In doing this primary arms has now become my "go to" site as they offer such a wide variety and have great turn around.

Great Deal


Everything it needed to be! Customer service I received made it even better.

Fail Zero Review


Excellent BCG, finish is amazing. Very slick very consistant. Feels great with very minimal lubrication. Smooth and all great internal parts and proper staking. This is one of only 2 BCG I recommend.



Excellent customer shipping...great sale price...perfect for my pistol build...Thanks again Primary Arms...