The P365-FUSE is a modular, optics-ready micro-compact designed for concealed carry and tactical applications. It builds on the proven P365 platform with enhanced modularity and accessory integration. Since adding it to our catalog in January 2026, it’s become a consistent performer with overwhelmingly positive customer feedback. This model is for the shooter who demands a customizable, reliable platform in a micro-compact footprint.
Key Features
- Enhanced modular FCU (Fire Control Unit) for maximum frame and grip compatibility.
- Optics-ready slide with integrated rear sight system for co-witnessing.
- Improved flat-face trigger with a crisp, consistent break.
- Redesigned slide serrations for positive manipulation under all conditions.
- Includes two 12-round magazines and a rigid polymer carrying case.
Specifications
| Caliber | 9mm |
| Barrel Length | 3.1″ |
| Overall Length | 5.8″ |
| Height | 4.1″ |
| Width | 1.0″ |
| Sights | Optics-ready cut, suppressor-height rear |
| Weight (measured) | 5.2 oz |
| Magazine Capacity | 12+1 (2 included) |
Frequently Asked Questions
Is the P365-FUSE compatible with my aftermarket P365 frame?
Compatibility is not guaranteed. The FCU is designed for maximum OEM compatibility. We had one customer report the slide was “too tight” on an aftermarket frame, but it functioned flawlessly on the original SIG frame. For reliable operation, we recommend using OEM frames and components.
What optics footprint does the slide use?
The slide is cut for the SIG ROMEOZero Elite / Shield RMSc footprint, which is one of the most common for micro-compact optics. Adapter plates are available for other popular footprints like the Holosun K Series.
Does it include a manual safety?
This model does not include a manual safety. It utilizes the same consistent, striker-fired safe action system as the standard P365 series.
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