The SIG Sauer P320 Compact Barrel (brand part number BBL-MOD-C-9) is a factory replacement barrel chambered in 9mm Luger and sized to the P320 Compact’s 3.9-inch slide length. SIG machines it from steel and finishes it in Black Nitride for corrosion and wear resistance that matches the factory original. Because the P320 uses a modular, serialized fire control unit rather than a serialized barrel or slide, swapping this barrel is a simple, tool-minimal job: unload the pistol, remove the slide from the grip module, and slide the old barrel out in favor of this one. It’s a straightforward way to replace a worn factory barrel or refresh a P320 Compact back to factory-spec dimensions.

Key Specifications

• Chambered in 9mm Luger.
• Measures 3.9 inches in length, matching the P320 Compact slide.
• Finished in Black Nitride steel for corrosion and wear resistance.
• Built as a factory replacement barrel style.
• Installs with a simple slide-out, slide-in swap, no gunsmithing required.

Frequently Asked Questions

What pistol does this barrel fit? The SIG Sauer P320 Compact, matched to its 3.9-inch slide length.

Is this barrel easy to install? Yes, remove the slide from the grip module with the pistol unloaded and slide the old barrel out for this one.

What finish is on the barrel? Black Nitride steel, matching the factory finish.

Buy the SIG Sauer P320 Compact 9mm Factory Replacement Barrel

Refresh or repair your P320 Compact with a factory-spec 9mm barrel. Order it from our SIG Sauer lineup, part of our handgun barrels selection, at our Lubbock, Texas gun shop for fast, direct shipping.