SIG Sauer P365X 9mm Micro Compact with ROMEO-RS Red Dot, 3.1 in Barrel, 12+1, XSeries, Nitron Black
This SIG Sauer P365X pairs the micro-size XSeries grip module and flat trigger with a factory-installed ROMEO-RS red dot. It offers a 3.1 inch steel barrel, a Nitron-finished slide with front and rear serrations, and a 12+1 capacity. The frame is marked NEWINGTON, NH USA, and the package includes two USA-made 12-round steel magazines. This example features the Romeo RS Det Dot Optic installed.
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: Light handling marks are present from previous use. Please refer to the photos for close-up views.
What’s Included
- SIG Sauer factory hard case
- SIG Sauer owner's manual
- SIG Sauer ROMEO-RS red-dot reflex sight (installed)
- Two SIG SAUER factory steel 12-round 9mm magazines
The P365X is part of SIG's XSeries, combining the compact 3.1 inch barrel with the XSeries grip module and a flat-faced trigger. It uses a striker-fired, short-recoil locked-breech system and does not have an external manual thumb safety.
The Nitron-finished slide includes front and rear serrations and a beveled muzzle. Markings include "P365" with the X logo on the slide, "SIG SAUER" and "9mm x 19" on the barrel hood, and "NEWINGTON, NH USA" on the frame. The receiver/fire control unit is stainless steel.
A SIG Sauer ROMEO-RS red dot is installed and ready to use, presenting a red dot reticle for rapid alignment. A green-dot front blade remains in place, while the rear iron sight is obscured by the optic. This setup is referenced by the seller as the Romeo RS Det Dot Optic.
Capacity is 12+1, and this pistol includes two USA-made steel magazines with witness holes at 5 and 12. The proprietary single-slot micro accessory rail on the frame supports compatible micro-format accessories.
The black polymer grip module provides a secure hold, and the overall micro size helps maintain a compact footprint while preserving the XSeries control features and flat trigger geometry.