Sig Sauer P320 Full-Size 9mm Luger 5.50" Threaded Black Nitron Barrel

The Sig Sauer P320 factory 9mm Luger threaded barrel is a direct replacement or upgrade for the P320 Full-Size pistol. Machined to Sig Sauer's original factory specifications, this 5.50" barrel drops into an existing Full-Size build to restore factory performance or add suppressor- and muzzle-device-ready capability right out of the box.

The barrel is chambered in 9mm Luger and measures 5.50" long, with a 1/2x28 RH thread pattern at the muzzle that accepts standard 9mm pistol muzzle devices and sound suppressors. A factory Loaded Chamber Indicator (LCI) is machined into the barrel, matching the original P320 Full-Size configuration and providing both tactile and visual indication of a chambered round. The exterior is finished in Sig Sauer's durable Black Nitron coating for corrosion resistance and a low-glare appearance. No sights are installed, allowing the user to keep their existing front and rear sight setup on the slide.

This is a factory replacement barrel for the Sig Sauer P320 Full-Size pistol only. It is a single barrel component and does not include a slide, frame, recoil spring assembly, sights, or any other pistol parts.