SIG Sauer P365X 9mm Micro, 3.1 in Barrel, XRAY3 Tritium Sights, 12+1, Optics-Cut Nitron Slide
The SIG Sauer P365X pairs the proven micro-size P365 platform with XSeries upgrades, including the flat trigger with an approximate 90-degree break and the XSeries grip module. It features a 3.1 in barrel, XRAY3 day/night tritium sights, and a Nitron-finished, optics-cut slide with the Compact (Shield RMSc) footprint. Capacity is 12+1 using the flush-fit X grip module, and the modular, serialized fire control unit supports straightforward grip module swaps. Made in the USA.
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: The optics cover plate is missing. There are light signs of handling and wear. Some surfaces show minor scratches.
What’s Included
- SIG Sauer factory hard case
- Lock
- 1x 12-round steel magazine (Made in USA, numbered witness holes)
This P365X is a striker-fired, short-recoil, locked-breech 9mm built around a stainless steel receiver and a black polymer XSeries grip module. The micro-size format keeps overall dimensions compact while still delivering a 12+1 capacity with the flush-fit X grip.
The XSeries flat trigger delivers an approximate 90-degree break for a consistent feel. The slide wears SIG’s Nitron finish and includes front and rear charging serrations for confident manipulation.
Factory XRAY3 day/night tritium sights are installed: a tritium front with a high-visibility green ring and a square-notch tritium rear, providing a clear 3-dot sight picture in varied lighting.
The optics-cut slide uses the Compact (Shield RMSc) footprint for direct mounting within that pattern. A SIG proprietary single-slot accessory rail is molded into the frame. There is no external manual thumb safety.
The modular, serialized fire control unit allows grip module swaps without FFL transfer for the grip module. Markings include a frame marked NEWINGTON, NH USA; a slide marked P365 with a stylized X; and a barrel marked 9mm x 19. Country of origin is USA.