The Trijicon HD XR Orange Night Sight Set for FN FNS/FNX/FNP-40 (Trijicon part no. 600881) is a direct-fit front-and-rear tritium night sight set from Trijicon, machined specifically for the FN FNS-40, FNX-40, and FNP-40 pistol family. The HD XR line pairs a tritium vial in the front sight with a bright photoluminescent outline that soaks up ambient light, so the front dot stays visible in full daylight and still glows after the lights go out. A square-notch rear sight gives a clean, distraction-free sight picture for fast follow-up shots. It is a straightforward upgrade for concealed-carry and duty guns in .40 S&W built on the FNS/FNX/FNP-40 platform.

Key Specifications

• Direct-fit for the FN FNS-40, FNX-40, and FNP-40 pistol family, no gunsmithing required.
• Orange front sight ring for a fast, high-contrast aiming reference in daylight.
• Tritium-powered front sight for aiming reference that stays visible in low light.
• Photoluminescent outline around the front tritium vial for improved daylight visibility.
• Comes with a matching square-notch rear sight for a clean sight picture.
• Sold as a complete front-and-rear sight set, not a single sight.

Frequently Asked Questions

Will these fit a standard FNX-45? No, this set is machined for the FNS-40/FNX-40/FNP-40 dovetail dimensions, not the FNX-45.

Do the sights need to be charged or exposed to light? No, tritium is self-illuminating and does not require a light source to glow.

Buy the Trijicon HD XR Orange Night Sight Set for FN FNS/FNX/FNP-40

Order the Trijicon HD XR Orange Night Sight Set for FN FNS/FNX/FNP-40 from our Lubbock, Texas gun shop for fast, insured shipping—a direct upgrade for low-light carry and duty use on the FNS/FNX/FNP-40. Browse more gun sights from our Lubbock, Texas shop.