SIG Sauer P365-FUSE 9mm Long-Slide, 4.3 in Barrel, 21+1 Capacity, Nitron Finish, RMSc Optics Cut, LXG Grip, 3x 21-Round Magazines
The P365-FUSE combines a 4.3 in long-slide configuration with a high-capacity 21+1 setup and factory RMSc-footprint optics cut. This example includes three 21-round steel magazines with orange followers, an LXG-textured X-Series grip module with a removable flared magwell, and a stainless-steel slide finished in Nitron over a DLC-finished carbon-steel barrel. Case label dated 26-Jun-2025.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are light scratches around the extended magazine well. There is light exterior wear on the outside of the barrel. Please refer to the photos for a close look at these areas.
What's Included
- 3x 21rd mags
- SIG Sauer factory hard case (gray polymer)
- Factory owner’s manual and literature
- Flared magazine well funnel (installed)
The P365-FUSE features a stainless-steel slide with a Nitron finish and a 4.3 in carbon-steel barrel treated with DLC. Forward and rear cocking serrations and a lightening/relief cut near the muzzle provide purposeful slide geometry. The action is a locked-breech, striker-fired, semi-automatic system paired with a flat-faced, nickel-plated trigger.
The X-Series polymer grip module uses LXG texturing and ships with a removable flared magwell funnel for rapid magazine insertion. A full-length 3-slot 1913 accessory rail is integrated into the dust cover. Three extended 21-round P365-series steel magazines with orange followers are included, delivering a 21+1 capacity.
Sighting equipment consists of fixed factory iron sights. The slide is cut for a direct-mount RMSc-footprint micro red dot, providing a ready interface for compatible optics without plates.
Dimensionally, this P365-FUSE measures about 7.2 in overall length, approximately 1.1 in wide at the controls, and weighs around 23.1 oz unloaded. It retains the modular P365 FCU architecture, is made in the United States, and corresponds to SIG Sauer part number W365F-9-BXR3P-RXX. MSRP is listed at $729.