The Sig Sauer P365 Fuse Comp is a semi-automatic 9mm pistol with a 3.7-inch barrel and an integrally compensated slide. The finish is Nitron Black, and the pistol has an optics-ready slide with a SIG-LOC compact footprint. It ships with XRay3 day/night sights, XMACRO polymer grips, two 21-round magazines, and one 17-round magazine. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: P365 Fuse Comp 
• Caliber: 9mm 
• Action: Semi Auto 
• Capacity: 17+1 / 21+1 
• Barrel Length: 3.7in 
• Color/Finish: Nitron Black 
   

Detailed Features 

• Integrally compensated 3.7-inch barrel to reduce muzzle rise 
• Optics-ready slide with SIG-LOC compact footprint 
• XRay3 day/night sights 
• XMACRO polymer grips 
• Ships with two 21-round and one 17-round magazine

Owners of the Sig Sauer P365 Fuse Comp consistently highlight the integral compensator as a practical improvement over the standard P365 for fast follow-up shots. The compensation is noticeable enough that buyers who shoot it back-to-back with a non-compensated P365 report a real difference in muzzle flip, though a handful note the added length affects their preferred carry position.

The XRay3 sights and the SIG-LOC optics-ready cut draw praise from buyers who want flexibility without milling. The grip on the XMACRO frame fills the hand better than the original P365 grip, which most owners see as an upgrade. The three included magazines (two 21-round, one 17-round) are treated as a genuine bonus rather than a marketing detail.

The P365 Fuse Comp carries a price premium over the standard P365, and feedback splits on whether the compensator justifies it for non-competition use. Carry-focused buyers who prioritize concealability occasionally find the compensated slide length a tradeoff; range and competition-oriented owners tend to view it as the right call.