Sig Sauer115740571
Sig Sauer Magazine Sig P320, P250 Full Size 40 S&W, 357 Sig Steel Matte$47.00
Availability: In Stock
The Sig Sauer P320/P250 Full Size 4.70" Black Nitron Barrel in .357 SIG is a genuine factory replacement barrel built for shooters who want to swap calibers without buying a new pistol. If you already run a P320 or P250 in another caliber and want to shoot .357 SIG—or you're rebuilding after wear—this is the OEM part engineered to spec by the manufacturer. The 4.70-inch length delivers the performance Sig designed into the full-size frame, and the black Nitron finish resists corrosion just like the original.
Barrel swaps on the P320 and P250 are straightforward for anyone comfortable with basic field stripping. This isn't a drop-in-and-forget affair—it's a genuine Sig Sauer component that maintains the tight tolerances your pistol demands. Whether you're a competitive shooter building a dedicated .357 SIG setup, a hunter exploring a flatter-shooting handgun round, or simply want the ability to change calibers in your modular platform, this barrel opens up that flexibility without replacing your entire gun.
The .357 SIG cartridge sits between 9mm and .40 S&W in performance—it delivers higher velocity than 9mm and a reputation for reliable expansion, making it worth serious consideration if you haven't already shot one. Pairing this OEM barrel with quality ammunition and proper maintenance ensures you get the velocity and accuracy Sig engineered into the design.
| Caliber | .357 SIG |
| Barrel Length | 4.70" |
| Finish | Black Nitron |
| Compatibility | Sig Sauer P320 Full Size, Sig Sauer P250 Full Size |
| Manufacturer | Sig Sauer |
Yes—this is a genuine Sig Sauer OEM barrel designed for the full-size P320 and P250 platforms. The P320 and P250 share modular architecture, but always verify your frame size is full-size before ordering. If you own a compact or subcompact variant, this barrel will not fit.
The P320 and P250 allow field-stripping for barrel removal and installation. If you're comfortable taking apart your pistol for cleaning, you can handle a barrel swap. If you're unsure, a gunsmith can install it quickly and ensure proper function and headspacing.
.357 SIG combines the velocity of a magnum rifle round with a handgun platform. It's known for reliable expansion and penetration, and it shoots flatter than 9mm or .40 S&W. Competitive shooters and hunters who want a single-shot stopper with proven ballistics often choose it.
You receive the barrel only. You'll need your existing P320 or P250 pistol to use it. No ammunition, tools, or installation hardware are included.
SKU: 115799398 • Width: 4.2in • Height: 1.9in • Depth: 9.5in • Weight: 0.38oz
Availability: In Stock
The Sig Sauer P320/P250 Full Size 4.70" Black Nitron Barrel in .357 SIG is a genuine factory replacement barrel built for shooters who want to swap calibers without buying a new pistol. If you already run a P320 or P250 in another caliber and want to shoot .357 SIG—or you're rebuilding after wear—this is the OEM part engineered to spec by the manufacturer. The 4.70-inch length delivers the performance Sig designed into the full-size frame, and the black Nitron finish resists corrosion just like the original.
Barrel swaps on the P320 and P250 are straightforward for anyone comfortable with basic field stripping. This isn't a drop-in-and-forget affair—it's a genuine Sig Sauer component that maintains the tight tolerances your pistol demands. Whether you're a competitive shooter building a dedicated .357 SIG setup, a hunter exploring a flatter-shooting handgun round, or simply want the ability to change calibers in your modular platform, this barrel opens up that flexibility without replacing your entire gun.
The .357 SIG cartridge sits between 9mm and .40 S&W in performance—it delivers higher velocity than 9mm and a reputation for reliable expansion, making it worth serious consideration if you haven't already shot one. Pairing this OEM barrel with quality ammunition and proper maintenance ensures you get the velocity and accuracy Sig engineered into the design.
| Caliber | .357 SIG |
| Barrel Length | 4.70" |
| Finish | Black Nitron |
| Compatibility | Sig Sauer P320 Full Size, Sig Sauer P250 Full Size |
| Manufacturer | Sig Sauer |
Yes—this is a genuine Sig Sauer OEM barrel designed for the full-size P320 and P250 platforms. The P320 and P250 share modular architecture, but always verify your frame size is full-size before ordering. If you own a compact or subcompact variant, this barrel will not fit.
The P320 and P250 allow field-stripping for barrel removal and installation. If you're comfortable taking apart your pistol for cleaning, you can handle a barrel swap. If you're unsure, a gunsmith can install it quickly and ensure proper function and headspacing.
.357 SIG combines the velocity of a magnum rifle round with a handgun platform. It's known for reliable expansion and penetration, and it shoots flatter than 9mm or .40 S&W. Competitive shooters and hunters who want a single-shot stopper with proven ballistics often choose it.
You receive the barrel only. You'll need your existing P320 or P250 pistol to use it. No ammunition, tools, or installation hardware are included.
SKU: 115799398 • Width: 4.2in • Height: 1.9in • Depth: 9.5in • Weight: 0.38oz