SIG SAUER P365-FUSE is the ultimate fusion of full-size capability that delivers a 21 + 1 round capacity featuring a long slide, 4.3” barrel, and the LXG (laser engraved X-grip) grip module that doesn’t compromise on capacity, shootability, or concealability.

The SIG SAUER P365-FUSE is a striker-fired, 9mm pistol with the polymer laser engraved LXG grip module, 1913 accessory rail, removable magwell, interchangeable small, medium, and large backstraps, and a nickel-plated flat-faced trigger.

The optics-ready stainless steel slide features aggressive serrations with fiber optic front sight and with black serrated rear sight and houses a 4.3” carbon steel, DLC finished barrel. The P365-FUSE ships with (2) 21-round and (1) 17-round magazines; in states with magazine capacity requirements the P365-FUSE ships with (3) 10-round magazines.

Born from the iconic roots of the game changing P365, the true crossover handgun has finally arrived; the P365-FUSE is the ultimate in full-size capability and micro-compact concealment for unmatched versatility.

With an optics-ready slide and barrel longer than any other compact in its class, combined with the ultra-thin LXG grip, the P365-FUSE delivers on accuracy, performance, and reliability.

Robby Johnson, Chief Marketing Officer, SIG SAUER, Inc.

The SIG SAUER P365-FUSE ROMEO-X features a factory installed ROMEO-X compact sight crafted from 7075 aircraft-grade aluminum, machined anti-reflection grooves on shooter-facing surfaces, distortion-free aspheric glass, with a patent-pending Beryllium Copper flexure-arm adjustment system. ROMEO-X series optics incorporate a high-efficiency point source red LED emitter with 2 MOA dot / 32 MOA circle reticle, side independent brightness adjustment buttons, 15 brightness settings including night vision settings, and a side-mounted CR1632 battery compartment with a threaded battery cap so the optic does not need to be removed from the pistol for battery changes. Additionally, the ROMEO-X offers a low deck height for standard-height iron sight co-witness, has a minimum continuous runtime of 20,000 hours at medium brightness setting and utilizes MOTAC™ (Motion Activated Illumination), MAGNETAC™ (Magnetic Activation), and D.A.R.C™ (Dark Adaptive Reticles & Coatings) technologies.


  • Caliber: 9mm
  • Capacity: 21 / 17 / 10
  • Overall length: 7.2 inches
  • Overall height: 5.1 inches
  • Overall width: 1.1 inches
  • Barrel length: 4.3 inches
  • Sight Radius: 6.0 inches
  • Optics Slide Cut: Compact
  • Weight (w/magazine): 23.1 ounces
  • SKU: 365XF-9-BFO
  • SKU (State compliant): 365XF-9-BFO-10


  • Caliber: 9mm
  • Capacity: 21 / 17
  • Overall length: 7.2 inches
  • Overall height: 5.7 inches
  • Overall width: 1.1 inches
  • Barrel length: 4.3 inches
  • Sight Radius: 6.0 inches
  • Optics Slide Cut: Compact
  • Weight (w/magazine): 24.8 ounces
  • SKU: 365XF-9-BFO-RXX

ROMEO-X Compact:

  • Footprint: P365 and Compact
  • Magnification: 1x
  • Reticle: 2MOA Dot / 32 MOA Circle
  • Objective Lens Diameter: 24 mm
  • Illumination Settings: 12 Daytime, 3 Night Vision

Source: SIG SAUER news release

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