The Sig Sauer P320-XTEN pistol in 10mm with a 5-inch barrel and black finish (brand part no. 320X5-10-BXR3-RX2) brings the full feature set of Sig’s X-Series into a carry-style 10mm platform, giving shooters and hunters power to match the cartridge. Sig Sauer mounts a factory-installed ROMEO2 reflex optic, rated to withstand the recoil the 10mm cartridge delivers, on an X-Series optic-ready slide with front and rear serrations. The 5-inch bull barrel pairs with XRay3 day/night sights, and a redesigned X-Series polymer grip module with a stippled finish improves control under recoil. Two 15-round steel magazines ship with the pistol, and the flat X-Series trigger breaks at 90 degrees. Note this model is not compatible with 9mm/.357/.40-caliber parts and accessories — only .45 and 10mm components fit this platform. Among 10mm semi-auto handguns, this P320-XTEN configuration favors hunters and defensive shooters who want factory optic integration.

Key Specifications

• The chambering is 10mm, with a 15+1-round magazine capacity.
• The barrel measures 5 inches, a bull-barrel design.
• A Romeo2 reflex optic is factory-installed, rated for 10mm recoil.
• The sights are XRay3 day/night sights as a backup to the optic.
• The grip module features a stippled X-Series polymer design.
• Two 15-round steel magazines are included.
• Shipping weight of approximately 3.9 pounds.
• The action is semi-automatic, cycling a fresh round into the chamber with every trigger pull.
• Equipped with a No safety.

Frequently Asked Questions

Does this pistol include a red dot optic? Yes, a Sig Sauer ROMEO2 reflex optic is factory-installed and rated for 10mm recoil.

Is this pistol compatible with 9mm parts? No, only .45 ACP and 10mm parts and accessories fit this platform.

Buy the Sig Sauer P320-XTEN Pistol

Sig’s full X-Series feature set on a carry-style 10mm platform is exactly what this Sig Sauer P320-XTEN Pistol delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.