
Availability: In Stock
The Sig Sauer P320 9mm Luger 3.90" Black Nitride Steel Barrel is a genuine factory replacement barrel engineered for shooters who want to swap barrels on their P320 Compact or upgrade to a fresh tube. Whether you're rotating barrels for maintenance, chasing a tighter group, or building out a modular setup, this barrel drops into your P320's slide and receiver with straightforward field-level simplicity—no gunsmith required. The black nitride finish delivers corrosion resistance and a clean, professional look that matches the factory aesthetic.
Sig designed this barrel with their reputation for precision and durability in mind. The heat treatment process hardens the steel to withstand thousands of rounds of 9mm Luger pressure cycles, ensuring consistent accuracy and reliable function whether you're running target loads or defensive ammunition. At 3.90 inches, it's purpose-built for the Compact model's slide geometry, giving you the ballistic performance and handling characteristics Sig engineered into that platform.
Swapping barrels on the P320 takes minutes: unload the firearm, remove the slide from the receiver and grip module, and slide out the old barrel. The new one seats just as easily. If you shoot multiple P320 Compacts, keep a spare on hand. If you're maintaining a duty or range gun, a fresh barrel extends the life of your frame and slide while keeping wear distributed. Genuine Sig factory parts carry the build quality and fit tolerances that aftermarket alternatives often compromise.
| Caliber | 9mm Luger |
| Barrel Length | 3.90 inches |
| Material | Steel |
| Finish | Black Nitride |
| Compatibility | Sig Sauer P320 Compact, P250 Compact |
| Model Number | BBLMODC9 |
No. This is a Compact-length barrel (3.90 inches) designed for the P320 Compact slide and receiver geometry. Full-Size and Carry models use longer slides and require different barrel lengths. Verify your P320 variant before ordering.
No. Barrel replacement on the P320 is a field-level operation: unload the firearm, remove the slide from the receiver and grip module, and swap the barrel. No special tools are required. Always verify the firearm is unloaded and follow Sig's manual for your specific model.
Yes. This barrel is designed to fit both P320 Compact and P250 Compact models that use the same 3.90" Compact-length slide and receiver configuration.
The barrel features a black nitride finish, which provides corrosion resistance and durability. This is a factory Sig finish that matches the standard appearance and protection of OEM Sig barrels.

SKU: 115705470 • Width: 4.2in • Height: 1.7in • Depth: 9.6in • Weight: 0.4oz





Availability: In Stock
The Sig Sauer P320 9mm Luger 3.90" Black Nitride Steel Barrel is a genuine factory replacement barrel engineered for shooters who want to swap barrels on their P320 Compact or upgrade to a fresh tube. Whether you're rotating barrels for maintenance, chasing a tighter group, or building out a modular setup, this barrel drops into your P320's slide and receiver with straightforward field-level simplicity—no gunsmith required. The black nitride finish delivers corrosion resistance and a clean, professional look that matches the factory aesthetic.
Sig designed this barrel with their reputation for precision and durability in mind. The heat treatment process hardens the steel to withstand thousands of rounds of 9mm Luger pressure cycles, ensuring consistent accuracy and reliable function whether you're running target loads or defensive ammunition. At 3.90 inches, it's purpose-built for the Compact model's slide geometry, giving you the ballistic performance and handling characteristics Sig engineered into that platform.
Swapping barrels on the P320 takes minutes: unload the firearm, remove the slide from the receiver and grip module, and slide out the old barrel. The new one seats just as easily. If you shoot multiple P320 Compacts, keep a spare on hand. If you're maintaining a duty or range gun, a fresh barrel extends the life of your frame and slide while keeping wear distributed. Genuine Sig factory parts carry the build quality and fit tolerances that aftermarket alternatives often compromise.
| Caliber | 9mm Luger |
| Barrel Length | 3.90 inches |
| Material | Steel |
| Finish | Black Nitride |
| Compatibility | Sig Sauer P320 Compact, P250 Compact |
| Model Number | BBLMODC9 |
No. This is a Compact-length barrel (3.90 inches) designed for the P320 Compact slide and receiver geometry. Full-Size and Carry models use longer slides and require different barrel lengths. Verify your P320 variant before ordering.
No. Barrel replacement on the P320 is a field-level operation: unload the firearm, remove the slide from the receiver and grip module, and swap the barrel. No special tools are required. Always verify the firearm is unloaded and follow Sig's manual for your specific model.
Yes. This barrel is designed to fit both P320 Compact and P250 Compact models that use the same 3.90" Compact-length slide and receiver configuration.
The barrel features a black nitride finish, which provides corrosion resistance and durability. This is a factory Sig finish that matches the standard appearance and protection of OEM Sig barrels.
SKU: 115705470 • Width: 4.2in • Height: 1.7in • Depth: 9.6in • Weight: 0.4oz
