If you're running a Sig Sauer P365 XL and want to upgrade with a quality 9mm threaded barrel, the True Precision P365XL 9mm Threaded Barrel in copper finish is a solid choice for shooters serious about accuracy and reliability. True Precision manufactures this barrel entirely in the USA using certified 416R stainless steel, with every step of design and machining handled stateside. It's the kind of commitment to American production that shows in a product built for personal defense and precision shooting.

The drop-in design fits the P365 XL (3.7") version only—no gunsmithing required, just install and shoot. The barrel features True Precision's proprietary broach cut 6-groove rifling with 1/10 RH twist, engineered specifically to shoot lead cast rounds safely alongside commercial jacketed ammunition without compromise. That flexibility matters if you reload or plan to try different ammunition sources. The chamber meets SAAMI spec, so you'll have reliable, consistent performance across the board.

The threaded version comes ready to suppressor-host with 1/2x28 threads, and includes a thread protector with a high-heat Viton O-ring lock to keep it secure. The target crown is cut deep to protect the rifling when the protector is installed. At 4.22" from chamber to muzzle, it pairs naturally with the P365 XL's compact frame for a balanced carry and duty gun. This is the kind of barrel upgrade that pays for itself in tighter groups and confidence in the gun you depend on.