The SilencerCo 9mm Threaded Barrel for the Sig P320 Full-Size (brand part no. AC2413) is a direct-fit replacement barrel for shooters adding a pistol suppressor to a P320. Every pistol suppressor needs a threaded host barrel, and SilencerCo built this line after seeing a market need for high-quality options. The 5.46-inch barrel is cut 1/2×28 and machined from 416R stainless steel with a black nitride finish. A thread protector ships with it, and a piston is required separately to complete a suppressor setup. It is a straightforward upgrade for a full-size P320.

Key Specifications

• The barrel is made for the Sig P320 Full-Size pistol.
• Chambering is 9mm, matching the pistol it replaces.
• The muzzle is threaded 1/2×28, the standard pitch for 9mm suppressor mounts.
• Barrel length is 5.46 inches, the dimension SilencerCo lists for this full-size barrel.
• Rifling has a 1:10 twist rate, a common choice for 9mm bullet weights.
• Material is 416R stainless steel, machined for strength and accuracy.
• The finish is black nitride, which resists wear and corrosion.
• A thread protector is included to guard the threads when no muzzle device is installed.
• A piston is required separately to run a pistol suppressor, since the barrel does not include one.

Frequently Asked Questions

Which pistol does this barrel fit? It is made for the Sig P320 Full-Size in 9mm.

Does it come with a thread protector? Yes. A thread protector is included to protect the threads when no muzzle device is installed.

Does the barrel include a piston? No. A piston is required separately to complete a pistol suppressor setup.

Buy the SilencerCo 9mm Threaded Barrel for Sig P320 Full-Size

A threaded barrel is the first piece of any pistol suppressor setup, and this one is machined to drop straight into a full-size P320. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and browse more handgun barrels while you are here.