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The .450 Bushmaster hits hard, and it deserves a carrier group that keeps up. This Fail Zero BCG comes fully assembled and drops right into most mil-spec .450 Bushmaster upper receivers, so there's no fitting, no fuss, just install it and go. Every critical part wears Fail Zero's patented EXO Nickel Boron finish, applied by UCT Coatings, the same outfit that treats parts for military hardware where failure genuinely isn't an option. That distinctive silver look isn't just for show. It reduces friction across all the moving surfaces, from the carrier sliding in the receiver to the cam pin and gas rings.
Nickel Boron is about as slick as coatings get. The action cycles noticeably smoother, you can run it with less lube, and it holds up well against wear and corrosion over the long haul. The real day-to-day win is cleanup. Carbon doesn't bond to the slick surface the way it does on a rough phosphate finish, so most of it wipes away with a rag. The light color also makes it dead simple to see what's clean and what still needs attention.
This isn't just a shiny coating over cheap parts. The bolt is machined from Carpenter 158 steel, the carrier is 8620 steel in the standard M16 profile, and the assembly is magnetic particle inspected and live-fire tested. The bolt and extractor are shared across .450 Bushmaster and .458 SOCOM, which is handy if you run both platforms.
This is the no-hammer configuration, meaning your hammer stays in the lower where it belongs, so it's ideal for builders sourcing a barrel and upper or swapping calibers on an existing setup. Made in the USA and backed by Fail Zero's reputation for one of the best Nickel Boron finishes you can buy.
Yes. It comes fully assembled and is designed to drop into most mil-spec .450 Bushmaster upper receivers with no fitting required. Just make sure your upper and barrel are set up for .450 Bushmaster and you're ready to run.
The bolt and extractor are listed as compatible with both .450 Bushmaster and .458 SOCOM, which share a common bolt face. That said, the carrier group is sold and configured for .450 Bushmaster, so pairing it with the correct barrel and magazine for your caliber is what matters most.
It's a patented Nickel Boron coating applied by UCT Coatings to every critical part. The slick, dry-lubricating surface reduces friction for smoother cycling, resists wear and corrosion, and makes cleanup much easier since carbon wipes off rather than caking on.
The 'No Hammer' designation just means the package contains the bolt carrier group itself and not a fire control hammer, which lives in your lower receiver anyway. This is the standard way BCGs are sold, so it's ready to use with your existing lower.
| UPC | 094922034939 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FZ-450-01-NH |
| Color | Silver |
| Length | 10.6500 |
| Model | |
| Product Type | Bolt Carrier Group |
| Shipping Weight | 0.81 |
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