SIG Sauer P365 FUSE 9mm Compact, 4.3 in DLC Barrel, Nitron Stainless Slide, Optics-Ready, 21+1
The SIG Sauer P365 FUSE is a compact, striker-fired 9mm that pairs a 4.3-inch DLC-coated carbon-steel barrel with a stainless-steel Nitron-finished slide. It is optics-ready with an RMSc/Compact footprint, includes steel sights with a green fiber-optic front, and ships with high-capacity factory magazines. Built on the P365 modular FCU architecture and made in the USA, this variant adds a flared removable magwell, interchangeable backstraps, and a 4-slot 1913 Picatinny rail.
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 minimal markings from previous handling and use. The bore is bright and clean. Refer to the photos for a detailed view.
What’s Included
- 2x 21-round SIG Sauer factory magazines
- 1x 17-round SIG Sauer factory magazine
- SIG Sauer factory hard case
- SIG Sauer owner's manual
- Two additional interchangeable backstrap panels (S and M)
- Cable lock
- Small parts bag
The FUSE configuration centers on performance-focused materials and finishes. The 4.3-inch barrel is carbon steel with a durable DLC finish, while the slide is stainless steel treated with SIG's Nitron finish. Front and rear slide serrations provide confident manipulation, and the pistol maintains a compact footprint for carry and duty use.
The slide is optics-ready with an RMSc/Compact footprint and comes with a cover plate installed. Out of the box, it wears steel sights: a green fiber-optic front and a plain black serrated rear, delivering a crisp, daylight-friendly sight picture.
Ergonomics are tuned for control. The aggressive textured polymer grip, flat-faced silver-colored trigger, and a flared removable magazine well support fast, consistent handling. Interchangeable backstraps allow quick adjustment to fit, and the dustcover hosts a 4-slot 1913 Picatinny rail for mounting a light.
Capacity and compatibility stand out. This pistol includes two 21-round and one 17-round factory P365-series magazines, and it remains compatible with higher-capacity P365 XMACRO magazines. It uses the P365 modular FCU architecture, enabling familiar controls and proven reliability across the platform.
Dimensions are approximately 7.2 inches in length, 5.1 inches in height, and 1.1 inches in width, with a weight of about 23.1 ounces with magazine. The case label SKU 365XF-9-BFO matches the pistol, confirming the correct factory configuration. Made in the USA with a black overall finish, this compact 9mm is a feature-rich P365 variant.