The SIG Sauer P365 FUSE Comp 9mm with ROMEO-X Red Dot is a complete, optics-ready micro-compact system designed for the shooter who demands performance without compromise. It integrates SIG’s proven P365 FCU with a compensated slide and a factory-installed ROMEO-X red dot for immediate use. Since we started stocking this model in Q4 2025, it has consistently been one of our top sellers in the micro-compact category, with over 40 units finding new homes.
Key Features
- Integrated Compensator: The slide-mounted compensator reduces muzzle flip and perceived recoil, allowing for faster, more accurate follow-up shots.
- Factory-Installed ROMEO-X Red Dot: A premium, closed-emitter optic is mounted from SIG, providing a clear, parallax-free sight picture that’s ready out of the box.
- Reliable Feeding: In our hands-on testing, this pistol fed flawlessly with a wide variety of ammunition, including both brass and steel case rounds.
- Enhanced Grip Module: Features an aggressive texture and a flared magwell for superior control and faster reloads in a compact frame.
- Optics-Ready Foundation: Built on the modular P365 Fire Control Unit (FCU), allowing for future customization and upgrades.
Specifications
| Caliber | 9mm Luger |
| Barrel Length | 3.1″ |
| Overall Length | 6.6″ |
| Height | 4.8″ |
| Weight (measured) | 2.3 oz |
| Capacity | 12+1 Rounds |
| Sights | ROMEO-X Red Dot (Co-witness Suppressor Height Sights) |
| Action | Striker-Fired |
Frequently Asked Questions
Is the red dot sight zeroed from the factory?
The ROMEO-X is mounted and torqued to spec at the SIG Sauer factory. We recommend confirming zero with your chosen ammunition, but it typically arrives very close from the factory.
Does the integrated compensator require a special holster?
Yes. The compensated slide has a different profile than a standard P365. You will need a holster specifically designed for the P365 FUSE Comp or P365 models with a compensator.
What magazines does it come with?
This package includes one 12-round flush-fit magazine. SIG P365 10, 12, 15, and 17-round magazines are all compatible with this model.
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