$210.63
Availability: In Stock
The Sig Sauer P320 Full Size 9mm Luger barrel is a factory-original replacement component for shooters who want to refresh their pistol's barrel or build a reliable 9mm P320 platform. This 5.5" threaded barrel is chambered in 9mm Luger and features a 1/2"-28 thread pitch for suppressor compatibility—a key upgrade for shooters looking to run their P320 suppressed or simply want the flexibility to do so down the road. As a factory Sig part, it's held to the same durability standards as OEM Sig barrels, meaning you're not compromising on quality when you go with a direct replacement.
Sig Sauer factory barrels are specially heat-treated to handle the stresses of regular shooting, whether you're putting rounds downrange at the range, running a duty gun, or working up loads for your carry setup. The steel construction and black finish match the professional look of a P320 pistol while standing up to real-world use. This is the kind of part that allows you to customize your P320 exactly how you want it—swap in your own barrel, keep your frame and fire control unit, and build a configuration that suits your shooting mission.
Before ordering, verify your slide type: this barrel is compatible with non-loaded chamber indicator (NLCI) slides. Importantly, it is not compatible with the P320 X-FIVE slide, so if you're running an X-Five platform, look elsewhere. Beyond that compatibility note, this is a straightforward, quality replacement barrel from the manufacturer—no guesswork, no surprises.
| Manufacturer | Sig Sauer |
| Product Type | Pistol Barrel |
| Firearm Platform | Sig Sauer P320 Full Size |
| Caliber/Chamber | 9mm Luger |
| Barrel Length | 5.5" |
| Thread Pattern | 1/2"-28 |
| Material | Steel |
| Finish | Black |
No. This barrel is not compatible with the P320 X-Five slide. It is designed for the standard P320 Full Size platform with non-loaded chamber indicator (NLCI) slides. If you own an X-Five, you'll need a barrel specifically made for that slide.
Yes. The barrel is threaded 1/2"-28, which is the standard thread pitch for 9mm suppressors. You can mount a compatible suppressor directly to this barrel.
No. This barrel is compatible only with slides that have a non-loaded chamber indicator (NLCI). If your slide has a loaded chamber indicator, this barrel is not the right fit.
This barrel is chambered in 9mm Luger (9x19mm NATO). It will not safely fire other calibers.
SKU: 115726950 • Width: 4.2in • Height: 1.8in • Depth: 9.5in • Weight: 0.42oz
Availability: In Stock
The Sig Sauer P320 Full Size 9mm Luger barrel is a factory-original replacement component for shooters who want to refresh their pistol's barrel or build a reliable 9mm P320 platform. This 5.5" threaded barrel is chambered in 9mm Luger and features a 1/2"-28 thread pitch for suppressor compatibility—a key upgrade for shooters looking to run their P320 suppressed or simply want the flexibility to do so down the road. As a factory Sig part, it's held to the same durability standards as OEM Sig barrels, meaning you're not compromising on quality when you go with a direct replacement.
Sig Sauer factory barrels are specially heat-treated to handle the stresses of regular shooting, whether you're putting rounds downrange at the range, running a duty gun, or working up loads for your carry setup. The steel construction and black finish match the professional look of a P320 pistol while standing up to real-world use. This is the kind of part that allows you to customize your P320 exactly how you want it—swap in your own barrel, keep your frame and fire control unit, and build a configuration that suits your shooting mission.
Before ordering, verify your slide type: this barrel is compatible with non-loaded chamber indicator (NLCI) slides. Importantly, it is not compatible with the P320 X-FIVE slide, so if you're running an X-Five platform, look elsewhere. Beyond that compatibility note, this is a straightforward, quality replacement barrel from the manufacturer—no guesswork, no surprises.
| Manufacturer | Sig Sauer |
| Product Type | Pistol Barrel |
| Firearm Platform | Sig Sauer P320 Full Size |
| Caliber/Chamber | 9mm Luger |
| Barrel Length | 5.5" |
| Thread Pattern | 1/2"-28 |
| Material | Steel |
| Finish | Black |
No. This barrel is not compatible with the P320 X-Five slide. It is designed for the standard P320 Full Size platform with non-loaded chamber indicator (NLCI) slides. If you own an X-Five, you'll need a barrel specifically made for that slide.
Yes. The barrel is threaded 1/2"-28, which is the standard thread pitch for 9mm suppressors. You can mount a compatible suppressor directly to this barrel.
No. This barrel is compatible only with slides that have a non-loaded chamber indicator (NLCI). If your slide has a loaded chamber indicator, this barrel is not the right fit.
This barrel is chambered in 9mm Luger (9x19mm NATO). It will not safely fire other calibers.
SKU: 115726950 • Width: 4.2in • Height: 1.8in • Depth: 9.5in • Weight: 0.42oz