SIG Sauer P365 FUSE ROMEO-X Compact 9mm Striker-Fired Pistol, 4.3" DLC Barrel, Nitron Slide, 21+1
The P365 FUSE ROMEO-X Compact merges SIG Sauer’s proven micro-compact lineage with full-size fight-ability. A 4.3-inch DLC-coated carbon-steel barrel, Nitron-finished stainless slide, and factory-installed ROMEO-X Compact closed-emitter red-dot sight give this 2025 release duty-grade performance in a carry-friendly package. Its laser-stippled LXG grip module accepts 17- and 21-round double-stack magazines, bringing high capacity and controllability to the P365 series.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: Minor superficial scratches and small blemishes are present on the slide and frame. The bore remains bright and shiny with crisp rifling.
What’s Included
- SIG Sauer gray hard plastic pistol case
- Factory-installed SIG Sauer ROMEO-X Compact closed-emitter red-dot sight
- 2× 21-round steel magazines
- 1× 17-round steel magazine
- Interchangeable S, M, L backstraps
- Removable magwell
- Dawson Precision spare fiber-optic inserts for front sight
- Factory paperwork
The extended 4.3-inch barrel is machined from carbon steel and treated with a durable Diamond-Like Carbon (DLC) coating for long-term corrosion resistance. Paired with the stainless slide’s Nitron finish, the pistol offers a rugged exterior built for daily carry.
SIG’s striker-fired action features a nickel-plated, flat-faced trigger that shortens reach and delivers a consistent, crisp break. Front and rear cocking serrations aid manipulation, while the optic-ready slide footprint matches Shield-RMS-c / SIG-LOC Compact patterns for future sight changes.
The factory ROMEO-X Compact sight uses a fully enclosed emitter for reliability in adverse weather and co-witnesses with the green fiber-optic front and black serrated rear irons. Its side-loading battery tray allows easy replacement without removing the optic.
A laser-stippled LXG polymer grip module provides texture without abrasive bite. The pistol ships with small, medium, and large backstraps and a removable flared magwell, letting shooters tailor grip size and reload speed.
An integral five-slot M1913 rail supports lights or lasers, and the 1-inch grip width keeps the 24.8-ounce pistol slim enough for concealed carry while offering 21+1 capacity with the supplied extended magazines.