FailZero is known for EXO nickel boron–coated components that run slick, resist fouling, and reduce the need for lubrication. Their lineup includes complete bolt carrier groups (AR-15, AR-10/AR-308, 9mm), bolts, carriers, hammers, triggers, and small parts. These work with standard AR uppers/lowers: barrels, barrel extensions, gas systems (gas key/gas tube), charging handles, buffer systems, and fire-control groups. Drop-in BCGs fit mil-spec upper receivers and interface with magazines and lowers for reliable cycling and easy cleaning.
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Failzero EXO Nickel Boron M-16 Bolt Carrier Group
Original price was: $139.99.$124.95Current price is: $124.95.Out of stock
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FailZero AR-308 / AR-10 EXO Nickel Boron Bolt Carier Group
Original price was: $249.95.$234.95Current price is: $234.95.Out of stock
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Failzero EXO Nickel Boron 6.5 Grendel (Type II) Bolt Carrier Group
Original price was: $179.99.$144.95Current price is: $144.95.Out of stock
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FailZero EXO Nickel Boron Curved Drop In Trigger Group
Original price was: $179.95.$164.95Current price is: $164.95.Out of stock
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FailZero EXO Nickel Boron Flat Drop In Trigger Group
Original price was: $184.95.$169.95Current price is: $169.95.Out of stock
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Failzero EXO Nickel Boron 7.62×39 Bolt Carrier Group
Original price was: $179.99.$153.95Current price is: $153.95.Out of stock
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Failzero Black M-16 Full Auto Bolt Carrier Group
Original price was: $169.95.$149.95Current price is: $149.95.Out of stock
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Fail Zero Black AR-15 Semi Auto Bolt Carrier Group BCG
Original price was: $169.95.$144.95Current price is: $144.95.Out of stock
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Failzero Nickel Boron AR-15 Semi Auto Bolt Carrier Group
Original price was: $149.95.$134.95Current price is: $134.95.Out of stock
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