The Sig Sauer P320/P250 Full-Size Replacement Barrel (brand part no. BBLMODF40) is a factory .40 S&W barrel built for the P320 Full-Size and P250 Full-Size frames, machined to a 4.7-inch length that matches the barrel these pistols ship with. Because .40 S&W and .357 SIG share the same case head dimensions, this barrel also fits a .357 SIG Full-Size P320 or P250 with no additional parts required, giving owners a simple way to run either cartridge from the same frame. As a genuine Sig Sauer part, it drops in without fitting or gunsmith work, making it a clean choice for owners replacing a worn barrel or converting their pistol’s chambering.

Key Specifications

• Chambered in .40 S&W.
• Barrel measures 4.7 inches.
• Fits the Sig Sauer P320 Full-Size and P250 Full-Size frames.
• Also fits a .357 SIG Full-Size P320/P250 with no additional parts required.
• Sold as a genuine Sig Sauer factory replacement barrel.

Frequently Asked Questions

What caliber is this barrel chambered in? .40 S&W.

Will it work in a .357 SIG Full-Size pistol? Yes, it fits a .357 SIG Full-Size P320 or P250 with no additional parts needed.

Buy the Sig Sauer P320/P250 Full-Size Replacement Barrel

Bring your Full-Size P320 or P250 back to factory spec or run .357 SIG from the same frame. Order it from our Sig Sauer lineup, part of our handgun barrels selection, at our Lubbock, Texas gun shop for fast, direct shipping.