This is a factory-direct, black threaded barrel designed specifically for the SIG SAUER P320 Compact (P320C) 9mm pistol. If you own a P320C and want to add a suppressor or compensator, this is the essential component you need. Machined from solid bar stock for durability, it provides a precise 1/2×28 thread pitch for reliable accessory attachment. Miami Shooters Supply ensures you get this quality Sig Sauer barrel with fast, reliable shipping to get your project on track.
Key Features
- Precision-engineered for a drop-in fit in SIG SAUER P320 Compact (P320C) 9mm models.
- Features a 1/2×28 thread pitch, the standard for most 9mm suppressors and muzzle devices.
- Extended 4.625-inch length protrudes beyond the standard compact slide for accessory clearance.
- Manufactured from high-strength, heat-treated stainless steel bar stock for long-term reliability.
- Finished in a durable black coating for corrosion resistance and a low-profile appearance.
- Maintains the factory chamber and bore specifications for consistent safety and performance.
Built For
This barrel is built for the P320C owner looking to build a functional suppressed or compensated setup. It’s ideal for range use, training, and home defense configurations where reduced recoil or sound signature is desired. It’s a straightforward upgrade for shooters who value practical functionality over unnecessary complexity.
Specifications
- Caliber: 9mm Luger (9x19mm)
- Material: Heat-Treated Stainless Steel
- Finish: Black
- Thread Pitch: 1/2×28
- Overall Length: 4.625 inches
- Compatibility: SIG SAUER P320 Compact (P320C) 9mm models. Verify fit with your specific slide generation.
FAQ
Is this a drop-in barrel, or will it require gunsmith fitting?
This barrel is manufactured to SIG SAUER specifications for a drop-in fit in the P320C. It should install directly into your slide without modification, though we always recommend checking function and headspace after installing any critical component.
Will this threaded barrel work with my P320C’s existing holsters?
Likely not. The added length and diameter of the threaded portion will prevent the pistol from seating in holsters designed for the non-threaded, flush-fit factory barrel. You will need a holster specifically designed for a P320C with a threaded barrel.


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