
Availability: In Stock
Current Stock: Out of stock
The Sig Sauer P365 FUSE 9mm is a striker-fired compact pistol that bridges the gap between concealment and full-size firepower. Built on the proven P365 platform, the FUSE combines a 4.3-inch carbon steel barrel with a 6.875-inch optic-ready slide—longer than most compact-class alternatives—to deliver the sight radius and handling of a full-size duty gun in a package thin enough for reliable everyday carry. With a 21-round capacity paired to a grip module just 1.1 inches wide, this 9mm pistol lets you carry serious ammunition without sacrificing concealability or shootability.
The FUSE ships with two 21-round and one 17-round steel magazines, giving you flexibility for duty, practice, or backup situations. Its carbon steel barrel carries a tough DLC finish, the slide is aggressively serrated Nitron steel, and the LXG grip module features laser-stippled X-pattern texture to keep the gun secure in your hands. A nickel-plated flat-faced trigger provides a clean, predictable break, while the fiber-optic front sight pairs with a black serrated rear sight for fast sight acquisition in variable light. The gun ships optic-ready with the ROMEO-X Compact already mounted—no additional setup needed if you want to run a red dot from day one.
The P365 FUSE is unapologetically built for shooters who refuse to compromise. Its M1913 accessory rail, included small/medium/large backstrap options, and removable magwell make it easy to tailor the gun to your hand and your mission. At 24.8 ounces and measuring 7.2 inches overall, it's light and short enough for concealed carry, yet substantial enough to control under fire. This is a workhorse—whether you're training at the range, carrying for personal defense, or building a reliable do-it-all defensive platform.
| Caliber | 9mm Luger |
| Barrel Length | 4.3 inches |
| Overall Length | 7.2 inches (182 mm) |
| Overall Width | 1.1 inches (28 mm) |
| Height | 5.7 inches (144.8 mm) |
| Sight Radius | 6.0 inches (152.4 mm) |
| Weight | 24.8 oz |
| Magazine Capacity | 21 rounds (standard); 17 rounds (compact) |
| Magazines Included | (2) 21-round steel; (1) 17-round steel |
| Slide Material | Stainless Steel (Nitron finish) |
| Barrel Material | Carbon Steel (DLC finish) |
| Frame/FCU Material | Stainless Steel (Black DLC finish) |
| Grip Module | LXG (Laser Stippled X-Grip), Polymer, Black |
| Trigger Action | Striker-fired |
| Trigger Type | Nickel-plated flat-faced |
| Front Sight | Fiber-optic |
| Rear Sight | Black serrated |
| Sights (w/ optic) | ROMEO-X Compact with fiber-optic front, black serrated rear |
| Optic Ready | Yes (ROMEO-X Compact RMS-c footprint pre-installed) |
| Accessory Rail | M1913 |
| Manual Safety | No |
| Threaded Barrel | No |
| Backstraps Included | Small, medium, large (interchangeable) |
The P365 FUSE ships with the ROMEO-X Compact optic pre-installed. It uses the Shield RMS-c footprint, so it's compatible with a wide range of direct-mount red dots that share that mounting pattern.
Yes. The FUSE is designed for exactly that trade-off. Its 1.1-inch-wide grip module keeps it thin and concealable, while the 21-round magazine capacity and 4.3-inch barrel give you the firepower and sight radius you'd expect from a much larger gun. Two 21-round mags and one 17-round mag come in the box.
Three interchangeable backstraps (small, medium, and large) are included so you can dial in the grip-to-trigger-guard fit that works best for your hand.
No, the P365 FUSE does not have a threaded barrel.


SKU: 145479947 • Width: 9.7in • Height: 3.1in • Depth: 13.35in • Weight: 3.4oz



Availability: In Stock
Current Stock: Out of stock
The Sig Sauer P365 FUSE 9mm is a striker-fired compact pistol that bridges the gap between concealment and full-size firepower. Built on the proven P365 platform, the FUSE combines a 4.3-inch carbon steel barrel with a 6.875-inch optic-ready slide—longer than most compact-class alternatives—to deliver the sight radius and handling of a full-size duty gun in a package thin enough for reliable everyday carry. With a 21-round capacity paired to a grip module just 1.1 inches wide, this 9mm pistol lets you carry serious ammunition without sacrificing concealability or shootability.
The FUSE ships with two 21-round and one 17-round steel magazines, giving you flexibility for duty, practice, or backup situations. Its carbon steel barrel carries a tough DLC finish, the slide is aggressively serrated Nitron steel, and the LXG grip module features laser-stippled X-pattern texture to keep the gun secure in your hands. A nickel-plated flat-faced trigger provides a clean, predictable break, while the fiber-optic front sight pairs with a black serrated rear sight for fast sight acquisition in variable light. The gun ships optic-ready with the ROMEO-X Compact already mounted—no additional setup needed if you want to run a red dot from day one.
The P365 FUSE is unapologetically built for shooters who refuse to compromise. Its M1913 accessory rail, included small/medium/large backstrap options, and removable magwell make it easy to tailor the gun to your hand and your mission. At 24.8 ounces and measuring 7.2 inches overall, it's light and short enough for concealed carry, yet substantial enough to control under fire. This is a workhorse—whether you're training at the range, carrying for personal defense, or building a reliable do-it-all defensive platform.
| Caliber | 9mm Luger |
| Barrel Length | 4.3 inches |
| Overall Length | 7.2 inches (182 mm) |
| Overall Width | 1.1 inches (28 mm) |
| Height | 5.7 inches (144.8 mm) |
| Sight Radius | 6.0 inches (152.4 mm) |
| Weight | 24.8 oz |
| Magazine Capacity | 21 rounds (standard); 17 rounds (compact) |
| Magazines Included | (2) 21-round steel; (1) 17-round steel |
| Slide Material | Stainless Steel (Nitron finish) |
| Barrel Material | Carbon Steel (DLC finish) |
| Frame/FCU Material | Stainless Steel (Black DLC finish) |
| Grip Module | LXG (Laser Stippled X-Grip), Polymer, Black |
| Trigger Action | Striker-fired |
| Trigger Type | Nickel-plated flat-faced |
| Front Sight | Fiber-optic |
| Rear Sight | Black serrated |
| Sights (w/ optic) | ROMEO-X Compact with fiber-optic front, black serrated rear |
| Optic Ready | Yes (ROMEO-X Compact RMS-c footprint pre-installed) |
| Accessory Rail | M1913 |
| Manual Safety | No |
| Threaded Barrel | No |
| Backstraps Included | Small, medium, large (interchangeable) |
The P365 FUSE ships with the ROMEO-X Compact optic pre-installed. It uses the Shield RMS-c footprint, so it's compatible with a wide range of direct-mount red dots that share that mounting pattern.
Yes. The FUSE is designed for exactly that trade-off. Its 1.1-inch-wide grip module keeps it thin and concealable, while the 21-round magazine capacity and 4.3-inch barrel give you the firepower and sight radius you'd expect from a much larger gun. Two 21-round mags and one 17-round mag come in the box.
Three interchangeable backstraps (small, medium, and large) are included so you can dial in the grip-to-trigger-guard fit that works best for your hand.
No, the P365 FUSE does not have a threaded barrel.
SKU: 145479947 • Width: 9.7in • Height: 3.1in • Depth: 13.35in • Weight: 3.4oz

