FailZero M16 / AR-15 EXO Coated Bolt Carrier Group

Manufactured by Fail Zero
SKU: 009-FZM16-4-01-NH
MPN: 009-FZM164-01-NH
Manufactured by Fail Zero
153 Reviews
Add to cart for sale price $138.59 $169.99

In Stock

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

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Details

Details

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 M16 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.

Features:
  • M16 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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Specifications

Bolt FinishNickel Boron
Bolt MaterialCarpenter 158 Steel
BrandFail Zero
Caliber Gauge5.56 NATO
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedLive Fire Tested
Magnetic Particle InspectMagnetic Particle Inspected
PlatformAR-15
Weight11.4 Oz
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 www.P65Warnings.ca.gov.

Great experience

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Great item. Great shipping time.

Fail zero bcg

by

Great price for a great product.

Great BCG

by

Great price on this BCG, got it for my AR pistol. Keep up the great work Primary Arms.

FailZero BCG

by

Great product and great customer service as always.

good bcg

by

Had it in for a couple of range days now, fires smoothly and is easy to clean. Very fast delivery. Great service

awesome

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Have yet to get out and shoot. But seems to be a great product and properly staked gas key.

Nice BCG

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I am building a rifle for my son and wanted to use a NiBor BCG because they feel smoother and are easier to clean. I have not completed the rifle yet, but this BCG looks very nice. I am sure that it will perform as well as it looks.

Awesome BCG

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I bought this to replace another NIBX BCG that was not working properly. This one works great I've put roughly 500 rounds through it and not a single gas key leak issue like I had with the previous manufacturer. Want a nickel boron BCG this is the one you want.

Slightly prefer Fail Zero to WMD...

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I have both WMD & Fail Zero BCGs, and both are very good quality. The Fail Zero bolt was a bit tight in the barrel extension at first, but after 250 rounds, it has loosened up and now slips like silk into battery. The WMD also functions flawlessly, and the finish is perfect. By contrast, the Fail Zero shows a few very light machining marks on the front of the carrier on the flat spot in front of the gas key - but they have no impact on performance. The biggest difference is the Fail Zero is "slipperier" when sliding in the upper receiver, and the bolt is easier to clean. Also, the NiB coating on the Fail Zero is a slightly darker gray color, and the WMD is a shinier silver color. Each BCG has about the same # of rounds fired now, and neither have had a malfunction in my 14.5" middy. So you can't go wrong with either, but...if I had to pick one, I'd keep my Fail Zero because the specs are the same and I prefer the slipperier/easier to clean NiB coating on that one.

Fail Zero BCG

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I have heard nothing but good things about Fail Zero BCG'S and decided to give one a try. Well Primary Arms basically forced me to buy one with the price they had on it. It was on sale for $110. The BCG was the last part I needed to finish my current project. I haven't shot the rifle yet but the changing handle racks like butter. As always Primary Arms did there part with super quick and cheap shipping. I will always be poor thanks to you guys!