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
67 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



I have been waiting to try one of these Zero-Fail bolts for a long time. I finally bought this one but was disappointed when it arrived. The entire bolt has a "smokey" look. Looks similar to the stains on other NiB bolts that I have (after shooting). The carrier seems to be clean, just stained. The bolt had Carbon deposits all around the tail. I scraped off the carbon and cleaned the whole BCG. Will see how it performs when I get it to the range. It has Obviously been Used... Did not see THAT in the description.

Great product


I recently purchased this bcg for a 300blk build and it is awesome! Great quality and very smooth. Would purchase again!

Great BCG


I've put a couple hundred rounds through my gun with this BCG and have had no issues whatsoever. I have never ran it without any oil, it goes against nature for me to not oil everything. But overall I think it is a great BCG and I would definitely buy it again.

Fail Zero Bolt


Looks good have not had the chance to try it yet. Fast shipping.



Looks great and after 240 rounds through it I couldn't be more pleased.

Fail zero BCG


Looks real nice I haven't got to use it yet but did my research and this is the best BCG aroun. Easy to clean and feels real smooth the EXO technology looks like its a permanent lube over the bolt which will work out just nice. Can't wait to test this BCG out and see how much it can take!

Great customer service


My BCG was lost in the mail and replaced without question. Very appreciated! Nice BCG too!

Nice product


My nickel boron BCG arrived quick and is a nice product, the Black Friday deal was hard to pass on.For a long while I as on the fence with NIB bolts and carriers, once I had one it grew on me like moss on a wet rock. Have a few now from WMD, LWRC to Failzero. They're all good and makes my life easier after shooting. So nice to be able to clean them quickly. PS, Ignore the manufacturer, all BCG's should be lubricated, nickel boron or not. A lubed firearm is a happy firearm and there's no exceptions at this time.

Great deal


My third one of these, on sale they are a great deal and somewhat easier to clean. Don't believe the hype, you'll need to do more than wipe but they run great and clean up well.



No complaints, good quality bcg.