FailZero EXO Coated .308 Bolt Carrier Group - DPMS Pattern

Manufactured by Fail Zero
Manufactured by Fail Zero
5 Reviews

Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.



This .308 Bolt Carrier Group is fully assembled and drop-in ready for most Mil-Spec AR-10 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. Compatible with .308 Winchester as well as 6.5 Creedmoor, you can build the precision semi-automatic rifle you have been dreaming about.

  • .308 compatible
  • DPMS Pattern and 6.5 Creedmoor compatible
  • Magnetic particle inspected
  • Live fire tested

EXO Nickel Boron treated parts include:

  • Bolt, extractor, bolt carrier, cam pin, carrier key, and firing pin

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.
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Bolt FinishNickel Boron
Bolt Material9310 Steel
BrandFail Zero
Caliber Gauge.308 Win
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleDPMS Pattern 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

Ratings & Reviews

5 reviews

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Awesome looking and great shooting bcg


Awesome bcg! I love the polish look and it shoots better than it looks. Shot 250 rounds the first trip without any issues. Thank you Primary for an awesome product.

Awesome BCG


Awesome bcg - I love the polish on it and it shoots very smooth. Shot 250 rounds on the first trip without a single problem.

Beautiful finish, much nicer than the picture.


So I'll start off by saying that the bolt I received was much more polished than the picture, which is great because I was preparing to polish it myself to give it a nice shine. Its not a mirror finish, but its def a beautiful piece of steel.

Great BCG


The FailZero BCGs feel like a bar of wet soap in your hand. They are that smooth.

Awesome BCG

by -

used this BCG in my Aero Precision 6.5 Creedmoor, have to say excellent BCG runs smooth never a cycling issue. If you're building an AR10 this is the BCG you will want!