Sig Sauer P365X Rear Sight Assembly

• XRAY3 night sight integration: The attached XRAY3 rear sight provides a clear, high-visibility reference in low light, helping maintain a usable sight picture when ambient light drops.
• P365X-specific assembly: Built for the SIG SAUER P365X, this rear sight assembly matches the pistol’s slide layout and supports a clean, factory-style fit for replacement or repair work.
• Steel construction: The steel body stands up to repeated slide cycling, holster wear, and routine handling, which matters on a carry pistol that sees regular use.
• Black finish: The black exterior keeps the sight visually unobtrusive on the slide and maintains a practical, duty-oriented appearance.
• Rear sight and plate in one unit: Combining the rear sight with the plate assembly simplifies the setup and restores the pistol’s rear sighting arrangement with the correct integrated component.

About the P365X Series

The P365X series sits within SIG SAUER’s micro-compact pistol family and is aimed at shooters who want a carry-sized handgun with handling features closer to a larger defensive pistol. In practical terms, the series combines the slim profile and concealability associated with the P365 platform with an optics-ready slide and an upgraded sighting arrangement that better suits modern defensive carry use.

A defining trait of the P365X format is its balance between compact dimensions and shootability. The platform is intended for concealed carry, defensive training, and everyday use where fast presentation, dependable controls, and a clear sight picture matter more than unnecessary bulk. Models in this family commonly pair the slide with X-RAY3 day/night sights, giving the pistol a sighting system that remains useful across bright daylight, indoor lighting, and reduced-light conditions. The series is designed around practical carry needs: compact proportions, compatibility with slide-mounted optics on appropriate models, and components built to withstand frequent handling and regular range use.

About the Sig Sauer P365X Rear Sight Assembly

The Sig Sauer P365X Rear Sight Assembly is a dedicated replacement or service part for the P365X pistol, built to restore the rear sighting arrangement used on this carry-focused handgun. Because it is configured as a rear sight plate assembly with attached XRAY3 night sight, it does more than replace a simple notch sight. It reinstates the integrated rear unit used on the slide, which is important on a pistol platform where compact dimensions leave little room for unnecessary parts or fitment issues.

In practical use, the XRAY3 rear night sight supports faster rear sight reference in varied lighting conditions. On a defensive handgun, that matters when moving between outdoor light, indoor environments, or low-light situations where a plain black rear can become harder to pick up. The assembly format also helps maintain the correct geometry and appearance for the pistol, making it suitable for repairs, maintenance, or returning the slide to its original sighting configuration.

The use of steel construction gives the assembly the durability expected from a slide-mounted handgun component. It is built to tolerate repeated cycling, routine carry wear, and the handling stresses that come with a pistol intended for regular defensive use. Finished in black, it matches the subdued, functional look typical of the P365X platform while keeping the focus on durability and a consistent sight picture rather than cosmetic detail.

About Sig Sauer

SIG SAUER traces its origins to a wagon factory opened near the Rhine Falls in Switzerland in 1853. Over time, the company expanded into firearms and related equipment, and SIGARMS changed its name to SIG SAUER in 2007. Today, SIG SAUER, Inc. is headquartered in Newington, New Hampshire, and the company’s product range extends well beyond handguns to include firearms, electro-optics, ammunition, airguns, and suppressors.

Within the optics field, SIG SAUER produces riflescopes, red-dot sights, and rangefinders, reflecting a broad focus on practical shooting equipment for defensive, sporting, and professional use. That wider experience in firearms and sighting systems is directly relevant to handgun parts such as the P365X rear sight assembly, where fit, durability, and sight visibility need to work together on a carry pistol.

Main Features

• Manufacturer: Sig Sauer
• Product type: Rear sight assembly
• Compatible with: Pistols
• Material: Steel
• Color: Black

Warranty

This Sig Sauer P365X Rear Sight Assembly is covered by a 2-year warranty.