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Faxon doesn't treat MIL-SPEC as the finish line. This M16 bolt carrier group starts with a 9310 tool steel bolt that's heat treated, shot peened, and magnetic particle inspected, then adds a salt bath nitride treatment for hardness and corrosion resistance. On top of that, the carrier and gas key wear Faxon's Chameleon PVD coating, which shifts color as light hits it and adds a layer of wear resistance most standard carriers skip. It's a genuine upgrade for AR-15 and M16-pattern rifles running .223 Rem or 5.56 NATO, and it's full-auto rated if your setup calls for it.
The real story here is how it runs. Faxon's proprietary Superfinish smooths the carrier body to cut friction and fouling, which pays off most in high-round-count sessions and suppressed builds where heat and carbon pile up fast. The bolt lugs are chamfered so they seat cleanly, even with hotter loads, and the S7 extractor comes assembled with the spring, insert, and crane O-ring already in place. Folks who've run these hard tend to describe the cycling as buttery, and that tracks with the finish work on the carrier.
Durability comes down to the details, and Faxon covers them. The gas key is secured with grade 8 fasteners and fully staked, so it stays put through thousands of rounds instead of loosening up on you. MPI testing on every bolt means you're not gambling on a hidden crack or stress point, which is exactly what you want from the part doing the hardest work in your rifle.
This is a standard MIL-SPEC M16-profile carrier, so it drops right into any properly spec'd AR-15 upper. It's a natural pick whether you're finishing a lightweight range gun, a suppressed setup, or a serious duty-style build. And with that Chameleon finish, it looks as good as it runs once you've got the dust cover open.
Yes, this is a standard MIL-SPEC M16-profile carrier group, so it drops into any properly spec'd AR-15 or M16-pattern upper chambered in .223 Rem or 5.56 NATO. It's a good idea to confirm your rifle uses standard mil-spec dimensions and headspace before installing. No modifications are needed for a standard build.
The 9310 tool steel bolt is stronger than typical carpenter steel bolts and gets heat treated, shot peened, and MPI tested to catch any hidden flaws. The Chameleon PVD coating on the carrier and gas key adds wear resistance and a color-shifting look, while Faxon's Superfinish reduces friction and fouling for smoother cycling. Together they give you a carrier that runs clean and lasts.
It's well suited for suppressed setups. The Superfinished carrier body cuts down on friction and carbon buildup, which is exactly what you want when a suppressor is pushing extra heat and fouling back into the action. That translates to easier cleaning and consistent function during longer strings of fire.
Yes, the gas key is secured with grade 8 fasteners and fully staked at the factory. Proper staking is critical for keeping the key tight over thousands of rounds, so this saves you from having to stake it yourself. It's one of the details Faxon handles right out of the box.
| UPC | 816341024649 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FF556BCGCNITRIDE-NCR |
| Model | |
| Product Type | Bolt Carrier Group |
| Color | Black |
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