FailZero Bolt Assemblies EXO Nickel Boron Finish

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0.20 LBS
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  • FailZero Bolt Assemblies EXO Nickel Boron Finish
  • FailZero Bolt Assemblies EXO Nickel Boron Finish
Now: $79.98
Was: $85.00
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This fully assembled and NiB coated (5.56/.223) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers. EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion resistance. By reducing friction this bolt assembly will make for easy cleanup and improve the performance of your rifle.

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

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Additional Information

Product ID:
Bolt Assemblies
EXO Nickel Boron Coated
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3 Reviews

  • 5
    Perfect name

    Posted by Dave Hendrixson on 14th Sep 2021

    Fail Zero is exactly what this should be named. I use in an select fire M4 and it functions flawlessly after hundreds of rounds, in the desert heat no less.

  • 5
    Works good

    Posted by Ryan on 4th May 2021

    Works as it should

  • 5
    Great price and fast shipping

    Posted by Marcus S. on 24th Sep 2017

    Great price and fast shipping

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