The Sig Sauer P365 Fuse pistol in 9mm with a 4.3-inch barrel (brand part no. 365XF-9-BFO-MAHI) extends the P365 lineup into a larger-frame, optic-ready configuration for shooters who want more capacity alongside the P365 platform’s compact heritage. Sig Sauer builds the Fuse to accept both 17-round and extended 21-round magazines, giving shooters flexibility between concealability and capacity. The optic-ready slide supports direct-mount red dot sights for faster target acquisition. Among optic-ready semi-auto handguns, this P365 Fuse configuration favors shooters who want P365-family ergonomics with higher capacity.

Key Specifications

• The chambering is 9mm.
• The barrel measures 4.3 inches.
• The pistol accepts both 17-round and 21-round magazines.
• The slide is optic ready for a direct-mount red dot sight.
• Measures 7.2 inches in overall length and 5.7 inches in height, weighing about 24.8 ounces with a loaded magazine.

Frequently Asked Questions

What magazine capacities does this pistol accept? Both 17-round and extended 21-round magazines.

Is this pistol ready for a red dot optic? Yes, the slide is optic ready for a direct-mount sight.

Buy the Sig Sauer P365 Fuse Pistol, 9mm

A larger-frame, optic-ready configuration of the P365 lineup is exactly what this Sig Sauer P365 Fuse Pistol delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.