Fail Zero
Shop Fail Zero at Arms East. U.S. shipping and Canadian PAL export available.
Fail Zero — AR Upper Parts (5)
- AR Bolt Carrier Groups Add to cart
Fail Zero’s complete bolt carrier group is engineered for .224 Valkyrie with nickel boron coating and EXO treatment for enhanced durability and performance. Drop-in design installs directly into most MIL-SPEC uppers without modification.
$172.00In Stock - AR Bolt Carrier Groups Add to cart
Fail Zero 450 Bushmaster Nickel Boron Bolt Carrier Group features EXO Nickel Boron coating for permanent dry lubricity and extreme durability, arriving fully assembled for immediate installation into mil spec .450 Bushmaster Upper Receivers.
$173.00Low Stock
Fail Zero — AR15 Parts (1)
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