
Availability: In Stock
The Sig Sauer P365 Fuse is a 9mm striker-fired pistol that bridges the gap between full-size shootability and compact concealment. Built on the proven P365 platform, the Fuse delivers a longer sight radius (6.0 inches) and extended slide than other pistols in its class—all while maintaining a razor-thin 1.1-inch grip width. This is the gun for shooters who refuse to compromise: you get the handling and capacity of a duty-size carry gun without the footprint. The Fuse comes optics-ready from the factory, pre-installed with a Sig Sauer Romeo-RS red dot sight and equipped with a fiber-optic front sight and serrated rear sight for fast target acquisition in any light.
Defensive performance is built in. The 4.3-inch carbon steel barrel (DLC-finished for durability) delivers the velocity needed to maximize modern ammunition expansion. The LXG grip module features laser-stippled texture for confident control in stress situations, and the M1913 rail gives you the flexibility to mount lights or lasers. Included are three steel magazines—two 21-rounders and one 17-rounder—giving you genuine flexibility in how you carry and reload. The nickel-plated flat-faced trigger is clean and predictable, and interchangeable small, medium, and large backstraps ensure a custom fit for your hand.
Whether you're configuring a carry gun, a home-defense pistol, or a range workhorse, the P365 Fuse delivers the full-size accuracy and control you'd expect from Sig Sauer, wrapped in a profile that actually fits your daily life. This is what happens when you stop choosing between capability and practicality.
| Caliber | 9mm Luger |
| Barrel Length | 4.3 inches |
| Overall Length | 7.2 inches |
| Overall Width | 1.1 inches |
| Overall Height | 5.7 inches |
| Weight | 24.8 oz (unloaded) |
| Magazine Capacity | 21 rounds (standard); 17-round variant included |
| Magazines Included | (2) 21-round steel magazines, (1) 17-round steel magazine |
| Sight Radius | 6.0 inches |
| Optic Mount | Shield RMS-c footprint (Romeo-RS pre-installed) |
| Front Sight | Fiber-optic |
| Rear Sight | Black serrated |
| Trigger Action | Striker-fired |
| Trigger Type | Nickel-plated flat-faced |
| Manual Safety | No |
| Grip Module | LXG (Laser Stippled X-Grip) polymer, interchangeable backstraps |
| Accessory Rail | M1913 |
| Slide Finish | Nitron |
| Slide Material | Stainless steel |
| Barrel Finish | DLC (Diamond-Like Carbon) |
| Barrel Material | Carbon steel |
| FCU Finish | Black DLC |
| FCU Material | Stainless steel |
| Threaded Barrel | No |
Yes. The Fuse ships with the Sig Sauer Romeo-RS 3MOA red dot sight already mounted and ready to use. It uses the Shield RMS-c optic footprint, which is compatible with a wide range of aftermarket red dots if you ever want to swap it out.
You get three steel magazines total: two 21-round magazines and one 17-round magazine. This gives you flexibility in capacity depending on your carry or use situation.
Yes. The Fuse includes an M1913 accessory rail under the barrel, so you can mount any light or laser designed for that standard.
The grip module comes with interchangeable small, medium, and large backstraps, so you can customize the fit to your hand without buying a new gun.

SKU: 198468363 • Weight: 3.4oz





Availability: In Stock
The Sig Sauer P365 Fuse is a 9mm striker-fired pistol that bridges the gap between full-size shootability and compact concealment. Built on the proven P365 platform, the Fuse delivers a longer sight radius (6.0 inches) and extended slide than other pistols in its class—all while maintaining a razor-thin 1.1-inch grip width. This is the gun for shooters who refuse to compromise: you get the handling and capacity of a duty-size carry gun without the footprint. The Fuse comes optics-ready from the factory, pre-installed with a Sig Sauer Romeo-RS red dot sight and equipped with a fiber-optic front sight and serrated rear sight for fast target acquisition in any light.
Defensive performance is built in. The 4.3-inch carbon steel barrel (DLC-finished for durability) delivers the velocity needed to maximize modern ammunition expansion. The LXG grip module features laser-stippled texture for confident control in stress situations, and the M1913 rail gives you the flexibility to mount lights or lasers. Included are three steel magazines—two 21-rounders and one 17-rounder—giving you genuine flexibility in how you carry and reload. The nickel-plated flat-faced trigger is clean and predictable, and interchangeable small, medium, and large backstraps ensure a custom fit for your hand.
Whether you're configuring a carry gun, a home-defense pistol, or a range workhorse, the P365 Fuse delivers the full-size accuracy and control you'd expect from Sig Sauer, wrapped in a profile that actually fits your daily life. This is what happens when you stop choosing between capability and practicality.
| Caliber | 9mm Luger |
| Barrel Length | 4.3 inches |
| Overall Length | 7.2 inches |
| Overall Width | 1.1 inches |
| Overall Height | 5.7 inches |
| Weight | 24.8 oz (unloaded) |
| Magazine Capacity | 21 rounds (standard); 17-round variant included |
| Magazines Included | (2) 21-round steel magazines, (1) 17-round steel magazine |
| Sight Radius | 6.0 inches |
| Optic Mount | Shield RMS-c footprint (Romeo-RS pre-installed) |
| Front Sight | Fiber-optic |
| Rear Sight | Black serrated |
| Trigger Action | Striker-fired |
| Trigger Type | Nickel-plated flat-faced |
| Manual Safety | No |
| Grip Module | LXG (Laser Stippled X-Grip) polymer, interchangeable backstraps |
| Accessory Rail | M1913 |
| Slide Finish | Nitron |
| Slide Material | Stainless steel |
| Barrel Finish | DLC (Diamond-Like Carbon) |
| Barrel Material | Carbon steel |
| FCU Finish | Black DLC |
| FCU Material | Stainless steel |
| Threaded Barrel | No |
Yes. The Fuse ships with the Sig Sauer Romeo-RS 3MOA red dot sight already mounted and ready to use. It uses the Shield RMS-c optic footprint, which is compatible with a wide range of aftermarket red dots if you ever want to swap it out.
You get three steel magazines total: two 21-round magazines and one 17-round magazine. This gives you flexibility in capacity depending on your carry or use situation.
Yes. The Fuse includes an M1913 accessory rail under the barrel, so you can mount any light or laser designed for that standard.
The grip module comes with interchangeable small, medium, and large backstraps, so you can customize the fit to your hand without buying a new gun.
SKU: 198468363 • Weight: 3.4oz
