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Fail Zero built its name on coatings that reduce friction and stretch the life of your parts, and this 5.56 Black Nitride BCG carries that reputation into a straightforward, no-nonsense package. It ships fully assembled and ready to drop into most mil-spec AR-15, M16, and M4 uppers, so there's no fitting or fussing before you're back at the range. The carrier is machined in the full-auto profile with a properly staked gas key, and the firing pin wears a chrome finish for a little extra corrosion protection where it counts.
The critical parts get a black salt bath nitride treatment, which hardens the surface and gives you real gains in wear and corrosion resistance. In practice that means a slicker action, less carbon sticking to the bolt and carrier, and cleanup that goes a lot quicker than you'd expect. Nitride sits into the metal rather than layering on top, so it holds up to hard use without flaking or changing the dimensions of the part.
This is a versatile carrier group. It's chambered around 5.56 NATO but plays nicely with .223 Remington and .300 Blackout builds too, making it a solid pick whether you're finishing a fresh upper or replacing a tired factory bolt. The full-auto profile carrier adds a touch more mass than a semi-auto cut, which many builders like for smoother, more consistent cycling.
This version is the no-hammer configuration, so it does not include a hammer, lower parts kit, or receiver. You're getting the complete bolt carrier group itself, assembled and drop-in ready. If your lower is already squared away, that's all you need to get running.
No. This is the no-hammer configuration, so it does not include a hammer, lower parts kit, or receiver. You're getting the complete bolt carrier group with the bolt installed, ready to drop into your upper. If your lower is already built out, this is all you'll need.
Yes. While it's built around 5.56 NATO, the same bolt face handles .223 Remington and .300 Blackout, since those cartridges share the same case head. It's a fine choice for a dedicated Blackout upper as long as your barrel and other components are set up for that round.
Nitride hardens into the surface of the metal instead of sitting on top like a plating, so it resists wear and corrosion while staying dimensionally accurate. It runs slicker than standard phosphate and lets carbon wipe off with less effort. It's an easy upgrade over a plain mil-spec finish without stepping up to Fail Zero's nickel boron pricing.
It is. The carrier is machined to the full-auto profile with a staked gas key and comes fully assembled, so it drops straight into most mil-spec AR-15, M16, and M4 uppers without any fitting. Just make sure your upper is standard spec and you'll be good to go.
| UPC | 094922014283 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FZ-NITRIDE-01-NH |
| Color | Black |
| Length | 10.9500 |
| Model | |
| Product Type | Bolt Carrier Group |
| Shipping Weight | 0.81 |
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