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The firing pin takes a beating every time you pull the trigger, and it's one of those small parts people rarely think about until it starts giving them trouble. FailZero's take on it swaps the standard chrome for their EXO Nickel Boron coating, the same finish that made the company a household name in the bolt carrier world. It creates a surface that's slick and hard at the same time, which means smoother striking and a lot less carbon clinging to it.
EXO Technology comes from UCT Coatings, FailZero's parent company, and it's a patented Nickel Boron process that leaves a permanently lubricious surface harder than the metal underneath. That translates to a couple real-world wins: the pin runs dry without needing grease or oil, and fouling tends to wipe away instead of building up. The coating won't flake or rub off with use, so the reduced friction and corrosion resistance are there for the long haul, not just the first few range trips.
This is a drop-in part built to mil-spec dimensions, so it fits standard AR-15 and M16/M4 bolt carrier groups chambered in .223 Remington and 5.56 NATO. If you can field strip your bolt carrier, you can swap this pin. Pull the retaining pin, slide the old firing pin out the back, drop this one in, and you're back in business. It's a smart pickup whether you're refreshing a high-round-count rifle, building fresh, or just want a nicer spare in the parts bin.
FailZero earned its reputation with law enforcement, gunsmiths, and dedicated range regulars who wanted parts that keep running when the lube runs out. The EXO finish is the same technology specified on military applications like mortar tubes and helicopter hoists, which tells you it's built for hard use. Pairing this coated firing pin with an EXO bolt or carrier is a natural move, but even on its own it's a meaningful upgrade over a plain chrome pin.
Yes, this pin is machined to mil-spec dimensions, so it drops into standard AR-15 and M16/M4 bolt carrier groups chambered in .223 Remington and 5.56 NATO. If you're running a non-standard or enhanced BCG, it's worth double-checking your carrier before ordering. For the vast majority of mil-spec builds, it's a straight swap with no fitting required.
No, the EXO Nickel Boron finish gives the pin permanent dry lubricity, so it runs without grease or oil. The coating is harder than the base metal and won't flake or rub off, which keeps friction low over the life of the part. You'll also notice carbon and fouling wipe away much easier than on a standard chrome pin.
It's a quick job for anyone comfortable field stripping their bolt carrier group. Remove the firing pin retaining pin, slide the old pin out the back of the carrier, drop the new one in, and reinstall the retainer. Always clear your firearm before doing any maintenance, and if you're new to BCG work, a gunsmith can knock it out in minutes.
It is. The pin uses the same patented EXO Nickel Boron technology from UCT Coatings that FailZero applies to their bolt carrier groups. That makes it a natural companion if you're already running a FailZero BCG, though it works just as well as a standalone upgrade over a plain chrome firing pin.
| UPC | 881314861774 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EXO-FIRINGPIN01 |
| Product Type | Firing Pin |
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