XS SI-R201P-6G R3D SIG SPG FN STD HT GRN
The XS Sights R3D night sight set brings purpose-built illumination to carry guns and duty firearms. Designed for shooters who demand fast target acquisition in variable light—from the range to real-world carry scenarios—these second-generation R3D sights pair a serrated, blacked-out rear sight with a dual-illuminated front sight combining tritium and photoluminescent paint for brightness across conditions.
What sets the R3D apart is engineering that respects your hands and your schedule. Installation requires 50% less force than previous designs, so you can upgrade your sights without a trip to the gunsmith or hours wrestling with aggressive dovetail tolerances. That ease of installation doesn't compromise durability; these sights are built to handle years of daily carry and abuse without losing zero or function.
The front sight's dual illumination—tritium for low-light glow and photoluminescent backing for daylight—keeps your sight picture fast whether you're shooting in a dim hallway, overcast conditions, or bright sun. The serrated rear sight eliminates glare and drives your eye downrange to the front sight, the way precision shooting demands. This is a no-compromise upgrade for Sig P320, P365, P226, and P229 platforms, as well as Springfield XD(M), XD(S), XD(E), HellCat, and FN 509 shooters.
Whether you're carrying daily, training for competition, or maintaining your duty gun, the R3D represents the evolution of tritium night sights—brighter, faster to install, and built to last.
Key Features
- Dual-illuminated front sight—tritium and photoluminescent for any light condition
- Serrated blacked-out rear sight eliminates glare and drives focus downrange
- 50% reduced installation force for faster, easier user installation
- Engineered for durability through years of EDC and duty use
- Proven fit on Sig P320, P365, P226, P229; Springfield XD(M), XD(S), XD(E), HellCat; and FN 509
Frequently Asked Questions
What guns are these sights compatible with?
The XS R3D sights fit SIG Sauer P320, P365, P226, and P229; Springfield Armory XD(M), XD(S), XD(E), and HellCat; and FN 509. Always verify fit with your specific model before ordering.
How do the tritium and photoluminescent elements work together?
The front sight uses both technologies: tritium glows in darkness without ambient light, while photoluminescent paint charges in daylight and glows in low-light conditions. Together they ensure your sight picture remains visible from bright sun to dim indoor environments.
Can I install these myself, or do I need a gunsmith?
XS designed the R3D with user installation in mind. They require 50% less installation force than earlier designs, making it practical to swap them yourself—though a gunsmith is always an option if you prefer professional installation.
What makes the rear sight design unique?
The rear sight is serrated and blacked out to eliminate glare and reflections. This design naturally draws your eye toward the illuminated front sight, speeding up target acquisition in both bright and low-light shooting.

