The Sig Sauer P365 Fuse pistol in 9mm with a 4.3-inch barrel and factory-mounted red dot optic (brand part no. 365XF9BFORXSL) combines full-size capability with micro-compact concealment in a razor-thin grip module. Sig Sauer extends the optic-ready slide to 6.875 inches, longer than any compact in its class, for improved sight radius and control, and a fiber-optic front sight paired with a black serrated rear sight rounds out the aiming system. The carbon steel barrel wears a DLC finish, and interchangeable small, medium, and large backstraps let shooters dial in the fit. Among crossover-carry semi-auto handguns, this P365 Fuse configuration favors shooters who want full-size performance in a compact-carry footprint.

Key Specifications

• Chambered in 9mm Luger.
• Capacity of 17+1 rounds.
• The barrel measures 4.3 inches, made from carbon steel with a DLC finish.
• The pistol ships with a factory-mounted red dot optic already installed.
• The sight radius extends to 6.0 inches, longer than typical compacts.
• The grip module includes interchangeable small, medium, and large backstraps.
• The trigger is a nickel-plated, flat-faced design.
• Ships with one 17-round magazine.
• The sights are Fiber Optic.
• The safety system is No Manual.

Frequently Asked Questions

Does this pistol include an optic? Yes, it ships with a factory-mounted red dot optic already installed.

What makes the Fuse different from a standard P365? A longer, optic-ready slide with an extended sight radius while keeping the compact P365 grip module.

Buy the Sig P365 Fuse Pistol

Full-size sight radius and control in a compact-carry footprint are exactly what this P365 Fuse delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.