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



The coating on this bolt is amazing! Installed it in my coated upper receiver and it has performed smoother and quieter than any wet lube upper I have run. Great price from Primary Arms when it goes on sale too!

Good Customer Service


They handled my order, and where responsive when I changed part of the order without getting upset or rude.

These BCG's are the beez neez


This BCG is the sh*# it will make you shoot faster, straighter and girls will want to drop there panties because you have one. So pull that trigger.

A little uglier...


This is my second FZ BCG, first one being right before the panic, FA with the hammer. Both of them seem very nicely built, proper staking on the key, and my first one has dealt with some over pressure situations without a hiccup. This one I just got is just a bit uglier though as far as the coating goes. Seems a bit duller, a bit rougher. It lives in an integral 300blk, so it'll always be filthy, just hope down the road it cleans up as easy (paper towel and oil) as the first one. I'd still get another.



this is my second FZ BCG... the M16FA version is super easy to clean, feels slicker than my WMD so when i saw they were on sale i grabbed 2....

fail zero bolt group


Timing was everything. I was looking for a coated bolt group for one of my 3 gun rifles and was concerned that I wouldn't be able to buy the bolt I needed because I expected it to be to pricey. I check out Primary Arms and there it was on sale a Fail Zero. Got it last week and have run between 276-340-682100pm to 358-291000pm rounds with no problems. Will wait a while before I clean it, to see if its easy like I am expecting.

I honestly have no idea


To be honest I have no idea if this bolt carrier group is any good. I haven't use it yet since I don't have enough parts to make a complete rifle yet. That being said, the item did arrive quickly. So that's nice.

Fail Zero BCG


Used this on my first AR build. I only have a few hundred rounds through but no malfunctions this far. When I remove the BCG the residu wipes off without even trying. Fit and Finnish is perfect. I know they claim you can run it dry or with minimal lube but I still run mine pretty wet, at least while its new. Primary Arms is great to order from.

Fail Zero BCG (no hammer)


Works fine. Super easy to clean. The great part was the sale price and the reliability of Primary Arms.

Excellent product


I bought this product and it's worth spending on.