The Fail Zero EXO Firing Pin (brand part number EXO-FIRINGPIN01) is a nickel boron-coated AR15 firing pin built to run cleaner and last longer than a standard phosphate part. Fail Zero applies its EXO Nickel Boron finish to give the pin a permanently lubricious surface, so it keeps moving smoothly even after it picks up carbon and fouling. That same coating boosts wear resistance and corrosion resistance well beyond an uncoated firing pin. It is a simple, inexpensive upgrade for shooters rebuilding a bolt carrier group or just replacing a worn factory pin.

Key Specifications

• EXO Nickel Boron coating creates a permanently lubricious surface for smoother cycling.
• Increased wear resistance extends service life over an uncoated firing pin.
• Increased corrosion resistance helps the pin hold up in harsh conditions.
• Direct-fit AR15 firing pin for standard mil-spec bolt carrier groups.
• Easier cleanup since fouling has less to grip on the coated surface.

Frequently Asked Questions

What does the EXO Nickel Boron coating do? It gives the firing pin a permanently lubricious, corrosion-resistant surface that keeps running smoothly even after carbon buildup.

What does this firing pin fit? Standard mil-spec AR15 bolt carrier groups.

Buy the Fail Zero EXO Nickel Boron Firing Pin

Keep your AR15 cycling smoothly with a coated firing pin built to resist wear and corrosion. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and check out more small AR15 parts for your next rebuild.