The XS Sights R3D Tritium Night Sight Set for Sig P225/P226/P229/P320, Springfield XD/XDM/XDS, and FN 509 (brand part no. SI-R015P-6N) delivers a fixed 3-dot tritium sight picture that fits this wide range of duty and carry pistols. XS builds the front sight with green tritium ringed in orange for fast acquisition, backed by a green tritium rear so the eye locks onto the front dot first under stress. The steel housings hold up to daily carry, and the rear sight edge aids one-handed slide manipulations.

Key Specifications

• Fits Sig P225, P226, P229, P320, plus Springfield XD/XDM/XDS and FN 509 pistols.
• Front sight uses green tritium with an orange outline for fast, high-contrast target acquisition.
• Rear sight uses green tritium to complete the 3-dot night sight picture.
• Built from steel housings for durability against holster wear.
• Rear sight edge is shaped to aid one-handed slide manipulations.
• Weighs approximately 0.12 lb, adding negligible weight to the slide.

Frequently Asked Questions

What pistols does this sight set fit? Sig P225/P226/P229/P320, Springfield XD/XDM/XDS, and FN 509.

Will these sights glow in the dark? Yes, both the front and rear tritium vials glow in low light.

Can I install these myself? Yes, by hand or with a standard sight pusher tool.

Buy the XS Sights R3D Night Sight Set for Sig P-Series, XD, FN 509

Upgrade your duty or carry pistol with a proven fixed tritium set. Order from our gun sights lineup at XS Sights and Schaefer Defense will ship it fast, direct to your door from our Lubbock, Texas gun shop.