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FailZero Bolt Carrier Group .223/5.56, 6.8 SPC/.224 Valkyrie, or 7.62x39 - Nickel Finish (Options)

  • This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec upper receivers chambered in the selected caliber (5.56/2.23; 7.62x39; or 6.8 SPC).  All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability, increased wear and corrosion resistance. FailZero patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle. (No Hammer)

    Nickel Boron treated parts include:

    • Bolt & Extractor
    • Bolt Carrier
    • Extractor
    • Cam Pin
    • Carrier Key
    • Firing Pin (AR15 and 6.8 SPC)

    Additional Features:

    • 7.62x39: EXO Nickel Boron makes for easy cleanup even with the corrosive 7.62x39 ammo. The bolt keeps the Mil-Spec length for a more reliable bolt. The Extractor hardware includes a heavy spring, silicone insert, and o-ring to give better extraction tension. Included is a Black Rifle Arms Enhanced Firing Pin that has a longer length as well as other dimensional changes beyond overall length for better performance without over penetration. Due to the Mil-Spec bolt length and enhanced firing pin, you can shoot most Russian ammo including Tula. Note: Tula Ammunition and Golden Tiger have issues where some primers are set too far in and will still cause light strikes even with an Enhanced Firing Pin. M16 Cut Bolt Carrier
    • 6.8 SPC/224 valkyrie: Bolt assembly is also compatible with the 6.8 SPC II cartridges. The Extractor hardware includes a heavy spring, silicone insert, and o-ring to give better extraction tension. M16 Cut Bolt Carrier
    • 2.23/5.56: Also compatible with .300 AAC Blackout
  • Manufacturer Part Number: FZ009-FZAR15-01-NH, FZ-6.8SPC-01-NH, FZ-7.62X39-01-NH

    No Additional Information Provided
  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
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