Description
SIG SAUER P365X Stainless/Black 9mm Pistol
The SIG SAUER P365X Stainless/Black combines the short 3.1-inch slide length of the original P365 with the extended XSeries grip used for a fuller firing-hand purchase and 12-round magazine capacity. This exact two-tone configuration is identified by manufacturer part number 365X-9-SXR3P and UPC 798681733699. It features an optics-ready stainless-steel slide, black polymer grip module, XRAY3 day/night sights, a flat trigger, and two 12-round steel magazines.
The P365X occupies the middle ground between the smallest P365 configurations and the longer-slide P365XL. It keeps the compact 3.1-inch barrel and approximately six-inch overall length while using a taller grip that accepts flush-fitting 12-round magazines. The resulting layout is designed for buyers who value a compact upper assembly but prefer more grip surface and capacity than the original 10-round P365 format.
Stainless Optics-Ready Slide
A natural stainless finish distinguishes this model from the more common black Nitron and coyote P365X variants. The stainless-steel slide is serrated to provide useful gripping surfaces during loading, clearing, and inspection. Its bright exterior contrasts with the black grip module and gives the pistol a traditional two-tone appearance.
The slide is cut for a compatible compact-footprint red-dot sight and arrives with a removable optic plate installed. This lets the owner retain the factory iron-sight arrangement or add a properly matched micro optic without having the slide machined. Optic fit, screws, and mounting procedures vary, so compatibility should be confirmed with the current instructions for both the pistol and the selected sight.
XRAY3 Day/Night Sights
SIG SAUER equips this configuration with standard XRAY3 day/night sights. The system provides a high-visibility front reference for daylight use along with illuminated sight elements intended to remain visible in reduced light. Because useful iron sights are already installed, the pistol is ready to use without an electronic optic and maintains a conventional sighting option if an optic is added later.
The 3.1-inch steel barrel preserves the compact proportions of the original P365. Paired with the short slide, it keeps the pistol easier to carry and store than longer-barreled models while still providing the familiar handling and maintenance pattern of the P365 family.
XSeries Grip and Flat Trigger
The black XSeries polymer grip module is longer than the original P365 grip, creating additional room for the support hand and allowing a 12-round magazine to fit flush. Its molded texture helps maintain contact through repeated firing, and the integral accessory rail provides a mounting point for compact equipment designed specifically for the P365 rail pattern.
An XSeries flat trigger complements the extended grip. The straight trigger face gives the finger a broad, consistent contact surface and provides the distinct feel associated with SIG SAUER’s XSeries pistols. The pistol uses a striker-fired, semi-automatic action with no external manual safety listed for this configuration.
Capacity and Included Magazines
The standard capacity is 12 rounds in the magazine plus one in the chamber when loaded in accordance with the owner’s manual. Two 12-round steel magazines are included, giving the buyer a primary and spare magazine in the factory package. The magazines fit flush with the XSeries grip, preserving the pistol’s intended dimensions and two-tone appearance.
Key Specifications
- Manufacturer part number: 365X-9-SXR3P
- UPC: 798681733699
- Model: P365X
- Caliber: 9mm Luger
- Action: Striker fired, semi-automatic
- Barrel length: 3.1 inches
- Capacity: 12+1
- Slide: Stainless steel, serrated, and optics ready
- Frame and grip: Black polymer XSeries grip module
- Trigger: XSeries flat trigger
- Sights: XRAY3 day/night sights
- Included magazines: Two 12-round steel magazines
- Color: Stainless and black
Compact Dimensions with a Fuller Grip
This P365X is well suited to customers who find the original P365 grip too short but do not need the longer slide of a P365XL or FUSE. The compact upper assembly supports discreet storage and carry, while the XSeries grip provides added capacity and a more substantial hold. The factory optic cut, night sights, flat trigger, and two-magazine package reduce the need for immediate changes and make the pistol a practical choice for regular range training or responsible defensive use.
Magazine capacity and firearm configurations may be restricted in some jurisdictions. Verify that this model and its included magazines are lawful where you live, and follow all applicable transfer, transport, storage, and safe-handling requirements.




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