This JK Armament threaded barrel for the Sig P365 in 9mm is built for shooters running a suppressor on a micro-compact (brand part no. JKBBLS365). JK Armament designed it from the ground up for suppressor use, with 1/2-28 threads, a 1:10 twist and a ramped breech block. It is made from 416R stainless steel and finished in black nitride, and it replaces the factory P365 barrel. JK suggests pairing it with its 105 CCX or the suppressor of your choice.

Key Specifications

• The barrel fits the Sig Sauer P365, and JK Armament lists the P365XL as a separate barrel.
• The chambering is 9mm, matching the P365’s factory caliber.
• The muzzle threads are 1/2-28, the standard pitch for 9mm suppressors and muzzle devices.
• The material is 416R stainless steel, a barrel steel known for accuracy and corrosion resistance.
• The twist rate is 1:10, a common rate for 9mm.
• The finish is black nitride, a hard surface treatment that resists wear and corrosion.
• The barrel has a ramped breech block, a feature JK builds into its threaded pistol barrels.

Frequently Asked Questions

Does this barrel fit the P365XL? No. This listing is for the Sig P365. JK Armament lists a separate threaded barrel for the P365XL.

What thread pitch does it have? The muzzle is threaded 1/2-28, so it accepts 1/2×28 suppressors, such as the JK 105 CCX, and 1/2×28 muzzle devices.

Is it designed for suppressors? Yes. JK Armament designed its threaded barrels from the ground up for suppressor use and suggests pairing this one with its 105 CCX or another suppressor.

Buy the JK Armament Threaded Barrel for Sig P365, 9mm

A threaded barrel is the part that turns a P365 into a suppressor host, and this one is made for the job. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and see our other handgun barrels while you are here.