Nickel Boron EXO Bolt Carrier Group

Nickel Boron EXO Bolt Carrier Group

FailZero Nickel Boron EXO BCG

We’re pleased to offer the FailZero EXO for sale, a bolt carrier group designed for the M16 but also preferred for M4 and AR15 builds. Requiring no lubrication for installation, the EXO NiB bolt carrier group fits perfectly into any upper receiver and provides smooth chambering with reduced friction between each round, thanks to its nickel boron coating. Although this full-mass bolt carrier group is heavier than your standard BCG, the added weight adds to the part’s reliability and performance as it can withstand thousands of rounds before showing signs of wear.

We offer FailZero EXO BCG bulk discounts for dealers with guaranteed satisfaction and fast shipping. Read more about our dealer program to learn how you can get bulk discounts on FailZero EXO BCGs, and shop with today.

EXO BCG parts:

Bolt & extractor (5.56/.223 compatible)

Bolt carrier


Cam pin

Carrier key

Firing pin

Link to parts manufacturer
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