Description
The True Precision P365XL threaded barrel is built for those who want to add suppressor capability to their compact carry gun without sacrificing reliability. Made from USA-sourced certified 416R stainless steel and finished in Titanium Copper Nitride, this barrel combines durability with the distinctive copper appearance that stands out against the standard finishes you'll find elsewhere.
Drop-In Installation on the P365XL
This is a genuine drop-in barrel, meaning no gunsmithing required. You swap out your factory barrel and you're done. Most users report installation takes less than a minute. The Titanium Copper Nitride finish provides enhanced surface durability, and the included thread protector keeps your threads safe when you're not running a suppressor or muzzle device.
Accuracy and Feeding Reliability
True Precision uses a proprietary broach cut design with 6-groove rifling specifically engineered for accuracy. The real advantage here is the improved feed ramp design over the factory barrel, which means more reliable feeding with defensive ammunition, hollow points included. The broach cut also lets you safely run all ammo types, including cast lead rounds. The 1/10 right-hand twist spin-stabilizes standard 9mm projectiles consistently.
Made in the USA
Every aspect of this barrel comes from True Precision's Georgia facility or American partners. The engineering prioritizes fit and function for everyday carry and defensive use, which means tight tolerances and tested reliability rather than cutting corners. The barrel comes threaded at 1/2×28, the standard for 9mm suppressors and muzzle devices.
Key Specifications
- Manufacturer Part Number: TP-P365XLB-XTC
- UPC: 719104537984
- Caliber: 9mm Luger
- Barrel Length: 4.35 inches (threaded overall length)
- Compatibility: Sig Sauer P365XL (3.7 inch), P365X-MACRO, P365X-MACRO Tacops
- Thread Pitch: 1/2×28
- Rifling: Proprietary broach cut, 6-groove, 1/10 RH twist
- Material: USA-sourced certified 416R Match Grade stainless steel
- Finish: Titanium Copper Nitride (TiCN)
- Installation Type: Drop-in design
- Made in: USA
- Weight: 4 oz
What’s Included
- True Precision P365XL threaded barrel
- Viton high heat integral O-ring lock thread protector
Frequently Asked Questions
Will this P365XL barrel fit my Sig pistol?
This barrel is specifically designed for the 3.7 inch P365XL, P365X-MACRO, and P365X-MACRO Tacops models. It does not fit the Spectre Comp or any 3.1 inch P365 models. Double-check your slide length before ordering.
Can I use all ammunition types with this barrel?
Yes. The proprietary 6-groove broach cut design allows safe use of all ammo types including cast lead rounds, hollow points, and standard defensive ammunition. The improved feed ramp is specifically engineered to handle a wide range of loads reliably.
Does this barrel work with suppressors?
Absolutely. The 1/2×28 threads are the standard for 9mm suppressors and muzzle devices. The included thread protector keeps your threads clean and protected when you're not running a suppressor.
What makes the Titanium Copper Nitride finish different?
The TiCN finish provides enhanced surface hardness and durability compared to standard coatings, while the copper color gives a distinctive appearance. This finish resists corrosion and wear, making it practical for carry and regular use.




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