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Faxon built this barrel to give P365 owners a real, measurable step up from the factory setup without turning the swap into a project. It's machined in-house from 416-R stress-relieved stainless steel, then finished in black nitride for extra corrosion resistance and smoother cycling. The straight fluted profile isn't just for looks either, it sheds a bit of weight while keeping the barrel rigid where it counts.
What sets this barrel apart from a stock replacement is the attention paid to tolerances. Faxon holds tighter specs than SIG's factory barrels, which translates into a more consistent lockup shot after shot. That consistency is what actually moves your group sizes in a smaller direction, especially noticeable once you get past 15-20 yards. The 11-degree target crown finishes things off, protecting the rifling at the muzzle and helping each round leave the barrel the same way every time.
There's no fitting, filing, or gunsmith visit needed here. This barrel is cut to factory-spec dimensions so it drops right into the slide of a standard SIG P365, P365 SAS, P365X, XMACRO Comp, or Spectre Comp (any variant running the 3.1 inch barrel). It won't fit the P365XL, XMacro Tacops, or the .380 ACP version of the P365, so double check your model before ordering. The feed ramp comes polished from the factory, which keeps ammo feeding smoothly right out of the box.
Going non-threaded keeps the barrel flush with the slide, which a lot of P365 owners prefer for a cleaner carry profile since this pistol is built around concealment in the first place. The conventional rifling means you're not locked into jacketed ammo only, cast lead bullets run through this barrel without issue, opening up more options if you like to handload or shoot cheaper range ammo. Every Faxon barrel is backed by their lifetime guarantee, and the whole thing is machined start to finish at their Ohio facility.
No, this barrel is cut for the standard 3.1 inch P365 platform. It fits the P365, P365 SAS, P365X, XMACRO Comp, and Spectre Comp, but not the P365XL or the 3.7 inch XMacro Tacops variants.
No fitting or gunsmithing is needed. It's machined to factory-spec dimensions so it drops straight into a compatible P365 slide.
Yes. Faxon uses conventional rifling on this barrel rather than polygonal rifling, so it handles cast lead bullets just as well as jacketed ammo.
The non-threaded barrel keeps a flush muzzle, which suits the P365's role as a compact carry gun. If you don't plan on running a suppressor or comp, there's no real reason to give up that clean profile.
The biggest differences are tighter manufacturing tolerances for a more consistent lockup, an 11-degree target crown, and a black nitride finish for added wear and corrosion resistance. Together these tend to tighten up groups compared to the stock barrel.
Yes, Faxon machines this barrel in-house at their facility in the Cincinnati, Ohio area, and it's backed by their lifetime guarantee.
| UPC | 816341025967 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 365B910NFSOQ-N |
| Model | |
| Style | Non-Threaded |
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