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The True Precision TPP365FBXT is engineered specifically for the Sig Sauer P365-FUSE 4.3-inch platform. Machined from USA-sourced 416R stainless steel and finished in satin, this barrel gives you precision upgrades without requiring frame modifications. It arrives threaded with a 1/2×28 pattern, ready to mount aftermarket muzzle devices out of the box.
True Precision doesn't just swap materials. This barrel features proprietary broach-cut rifling with six grooves and a 1:10 right-hand twist matched to common 9mm bullet weights. The feed ramp is widened and optimized, while chamfers and barrel geometry are refined beyond factory specs. That combination means reliable cycling with everything from target rounds to defensive ammunition. The barrel is designed without the loaded chamber indicator cut-out, which simplifies installation and gives you a clean profile.
Satin stainless construction resists corrosion without heavy coatings that hide the material underneath. The finish is workmanlike and durable, though it benefits from regular maintenance like any bare stainless barrel. The 4.3-inch length preserves the P365-FUSE's compact carry profile while supporting the full velocity potential of the 9×19 cartridge. The 1:10 twist rate keeps groups tight across standard to heavier ammunition, and the threaded muzzle opens options for suppressor hosting or lightweight compensators if you want to experiment.
Yes, this barrel requires zero frame modification and swaps in during a normal disassembly. One important note: if your P365-FUSE has a loaded chamber indicator cut-out, you'll need to either remove or shorten the LCI lever before installation. Once adjusted, the barrel functions without issues in that configuration.
The proprietary broach-cut rifling in this barrel is designed to handle all ammunition types, including cast lead. The 1:10 twist rate and geometry accommodate a wide range of bullet weights and materials you're likely to shoot.
True Precision widened and optimized the feed ramp geometry beyond Sig's OEM specs. The advanced cuts and chamfers reduce feeding hesitation across different ammunition profiles, especially important with modern hollow-point defensive rounds. Combined with the improved barrel lockup, you get more consistent cycling.
Satin stainless is corrosion-resistant and works well for regular shooting and carry, but it's not as maintenance-free as treated finishes like black nitride. Regular cleaning and occasional oiling keeps it looking good. If you want a more hardened finish, True Precision offers this barrel in multiple coatings.
| UPC | 719104542070 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | TPP365FBXT |
| Length | 4.30" |
| Model |
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