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
68 Reviews

In Stock

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



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



Fast shipping, excellent customer service, will continue toorder from PPrimary Arms

Good product, good price


Good looking product, staking could have been a little bit better. This was my first purchase from Primary Arms. Excellent shipping, good communication. Very pleased and will buy from again.

Perfect for the Price!


Got it on sale for $109 for my new built; took it to the range and what a difference. Runs and cycles without issues and very smooth operation.

Fail Zero Bolt carrier


Got my bolt carrier today quick service like all the reviews said very happy with Primary arms.

Great deal


Got this cuz it was on sale for 99$, ran it a couple times so far with no jams, nice lookin finish for rifle

Awesome BCG! Fast Shipping!


Great BCG and very fast shipping. Thanks!

fail zero bcg


Great product fit perfect would highly recomend

Fantastic product


Have run this BCG in my RRA LAR15 for years so when these went on sale I jumped on one to complete an upgrade project on my 20+ year old EA-J15 which is now range worthy again.

Great BCG


High quality product, slipped right in. Can run without lube (I ran 500 rounds just to test it out and it ran fine), and wipes clean with a cloth. Extremely fast shipping, and great price. They cost more straight from FailZero and this is the lowest price I've found. I'll never use any other BCG's in my AR's.

Fail Zero EXO Bolt carrier


I bought this for a new SPR type build I have not yet installed it but it looks to be of good quality. I will report back once I get to use it.As always PA was quick with the delivery. Keep up the good work.