Sig Sauer115717964
Sig Sauer P320 9mm Luger 4.70" Black Nitride Steel Barrel$164.38
Availability: In Stock
The Sig Sauer P320 .40 S&W 4.70" Black Nitride Steel Barrel is a factory replacement barrel built to Sig's exacting standards for shooters who need a direct fit upgrade or replacement component for their P320 platform pistol. Whether you're refreshing a worn barrel, converting your P320 to .40 S&W, or keeping a backup ready to go, this barrel delivers the fit and finish you'd expect from a major firearms manufacturer. The black nitride finish resists corrosion and wear, holding up to regular range use and real-world conditions without fussing.
This barrel is engineered to function reliably in the P320 platform—one of the most modular duty and recreational pistols on the market. At 4.70 inches, it maintains the compact-to-mid-size profile that makes the P320 so versatile, whether you're running it as a duty gun, a range trainer, or an everyday carry pistol. Drop-in fitment means minimal gunsmithing; you get accurate headspace and chamber dimensions straight from Sig.
Shooters who run suppressed setups, reload .40 S&W, or simply want to extend the life of their P320 will appreciate having a quality factory barrel on hand. Black nitride barrels are known for longevity and are easier to maintain than bare steel in field conditions.
| Caliber | .40 S&W |
| Barrel Length | 4.70 inches |
| Material | Steel |
| Finish | Black Nitride |
| Platform | Sig Sauer P320 |
| Part Number | BBLMODF40 |
This barrel is designed for the P320 platform. Sig P250 and P320 shares some components, but barrel compatibility between generations should be confirmed with Sig Sauer or a certified gunsmith before installation.
Black nitride is a hardened, corrosion-resistant coating applied to steel. It resists rust and wear better than bare steel, requires less maintenance, and holds up well to regular shooting and cleaning—ideal for a working barrel you'll rely on.
Yes. As a factory Sig Sauer barrel, it's engineered to fit directly into your P320 without additional gunsmithing or fitting.
Barrel alone is not a complete conversion. A full .40 S&W conversion typically requires a barrel, magazine, and sometimes a recoil spring assembly. Consult Sig Sauer or a qualified gunsmith for conversion compatibility and assembly guidance.
SKU: 115832922 • Width: 4.1in • Height: 1.9in • Depth: 9.5in • Weight: 0.38oz
Availability: In Stock
The Sig Sauer P320 .40 S&W 4.70" Black Nitride Steel Barrel is a factory replacement barrel built to Sig's exacting standards for shooters who need a direct fit upgrade or replacement component for their P320 platform pistol. Whether you're refreshing a worn barrel, converting your P320 to .40 S&W, or keeping a backup ready to go, this barrel delivers the fit and finish you'd expect from a major firearms manufacturer. The black nitride finish resists corrosion and wear, holding up to regular range use and real-world conditions without fussing.
This barrel is engineered to function reliably in the P320 platform—one of the most modular duty and recreational pistols on the market. At 4.70 inches, it maintains the compact-to-mid-size profile that makes the P320 so versatile, whether you're running it as a duty gun, a range trainer, or an everyday carry pistol. Drop-in fitment means minimal gunsmithing; you get accurate headspace and chamber dimensions straight from Sig.
Shooters who run suppressed setups, reload .40 S&W, or simply want to extend the life of their P320 will appreciate having a quality factory barrel on hand. Black nitride barrels are known for longevity and are easier to maintain than bare steel in field conditions.
| Caliber | .40 S&W |
| Barrel Length | 4.70 inches |
| Material | Steel |
| Finish | Black Nitride |
| Platform | Sig Sauer P320 |
| Part Number | BBLMODF40 |
This barrel is designed for the P320 platform. Sig P250 and P320 shares some components, but barrel compatibility between generations should be confirmed with Sig Sauer or a certified gunsmith before installation.
Black nitride is a hardened, corrosion-resistant coating applied to steel. It resists rust and wear better than bare steel, requires less maintenance, and holds up well to regular shooting and cleaning—ideal for a working barrel you'll rely on.
Yes. As a factory Sig Sauer barrel, it's engineered to fit directly into your P320 without additional gunsmithing or fitting.
Barrel alone is not a complete conversion. A full .40 S&W conversion typically requires a barrel, magazine, and sometimes a recoil spring assembly. Consult Sig Sauer or a qualified gunsmith for conversion compatibility and assembly guidance.
SKU: 115832922 • Width: 4.1in • Height: 1.9in • Depth: 9.5in • Weight: 0.38oz