SIG SAUER Adds the P365 FUSE Comp to Its Growing Micro-Compact Ecosystem
SIG SAUER is proud announced their latest addition to its popular P365 family with the new P365 FUSE Comp. The FUSE Comp focuses on recoil mitigation, faster follow-up shots, and out-of-the-box readiness for serious end users.
At the core of the FUSE COMP is a slide-integrated compensator paired with a 3.7-inch barrel that reduce muzzle rise without increasing overall size, supporting faster follow-up shots. Aggressive slide serrations and a flat-faced trigger enhance control, while the polymer grip module adds interchangeable backstraps, a 1913 rail, and X-RAY day/night sights. It ships factory-equipped with a fully enclosed ROMEO-X SIG-LOC Compact optic, mounted from underneath for a secure lockup and low deck height that maintains iron sight co-witness.
Below is the complete product description and features of the P365 FUSE COMP.
Product Description

The P365-FUSE COMP ROMEO-X SIG-LOC™ delivers full-size shootability in a streamlined P365 platform, pairing a slide-integrated compensator with a factory-mounted enclosed optic for maximum control and confidence.
A slide-integrated expansion chamber paired with a 3.7” barrel reduces recoil and muzzle rise without adding length, giving the FUSE the flatter shooting performance the platform was built for. Aggressive FUSE slide serrations ensure positive manipulation in any condition.
The pistol comes equipped with a ROMEO-X SIG-LOC Compact optic, fully enclosed, sealed, and gas-purged for durability and all-weather performance. Mounted from underneath using the SIG-LOC system, it delivers the strongest optic lockup in the industry with a low deck height for standard-height iron sight co-witness.
A polymer grip module with 1913 accessory rail, interchangeable backstraps, and X-RAY3 day/night sights round out a pistol designed for hard use and fast shooting right out of the box.
Features


• Slide-integrated expansion chamber with 3.7” barrel
• Aggressive FUSE slide serrations
• ROMEO-X SIG-LOC Compact enclosed optic
• Under-slide SIG-LOC mounting system for superior lockup
• Side-mounted battery for easy changes without optic removal
• Polymer grip module with 1913 accessory rail
• Interchangeable small, medium, and large backstraps
• X-RAY3 day/night sights
• Flat-faced striker-fired trigger
• Includes (1) 17-round and (2) 21-round steel magazines
Conclusion


The P365 FUSE Comp represents SIG’s continued evolution of the micro-compact performance category. By integrating a compensator directly into the slide and pairing it with an enclosed optic system, the platform offers a blend of controllability and concealability that appeals to both defensive carriers and performance-minded shooters. The interchangeable ergonomics, accessory compatibility, and magazine capacity further position the pistol as a versatile option for concealed carry, duty backup roles, or range training.
With an MSRP of $1,279 (currently listed around that price on GunBroker), the FUSE Comp sits in the premium end of the striker-fired carry market but arrives fully equipped with features that many shooters would otherwise add aftermarket.