Description
The XS Sights R3D set gives your Glock a sighting system that works just as well in bright daylight as it does in the dark. The green tritium front sight is wrapped in a photoluminescent green Glow Dot that soaks up ambient light and keeps glowing in low light, so your eye locks onto the front post before it's even dark enough to rely on the tritium alone. Out back, the two-dot rear is blacked out to increase contrast, which keeps your focus where it belongs without the rear dots competing for attention.
Why the R3D Sight Picture Works
XS designed these around a traditional 3-dot notch and post layout, but with a twist. The front tritium vial is brighter than the rear and helps charge the Glow Dot, so the front sight glows just a touch more than the rear vials. That difference is subtle but effective, and it keeps your eye driven downrange instead of splitting attention across three equal dots. Reviewers who upgraded from factory Glock night sights describe the front dot as easy to pick up fast, and the sights sit slightly taller and more pronounced than stock for quicker alignment.
Built to Take a Beating
These are cut from CNC steel with a blued finish, so they hold up to duty use and years of everyday carry. The rear features an anti-reflective tritium lens that cuts glare in bright light, plus a rear sight ledge that gives you an edge to catch on a belt or holster for one-handed slide manipulation. The whole set carries a snag-free profile and fits standard Glock holster options.
Fitment and Install
This set covers a wide range of standard-height Glock models including the 17, 19, 22, 24, 26, 27, 31, 36, and 38, among others. The kit comes ready to install with the hardware and tools XS includes in the box. You can seat them with a sight pusher or a hammer and punch, and XS builds their rear dovetails to reduce the force needed compared to a lot of competitors. Note these are standard-height sights, so they aren't intended for use with a red dot or suppressor.
Key Specifications
- Manufacturer: XS Sights
- Manufacturer Part Number: GL-R012P-6G
- UPC: 647533046244
- Style: Tritium Night Sight (3-Dot)
- Front Sight: Green tritium with green photoluminescent Glow Dot ring
- Rear Sight: Blacked-out two-dot green tritium
- Frame Material: CNC Steel
- Finish: Blued
- Front Sight Length: 0.500"
- Profile: Snag-free, fits standard Glock holsters
- Fits: Glock 17, 19, 22, 24, 26, 27, 31, 36, 38 (standard height)
- Warranty: 10-year tritium night sight warranty
What’s Included
- Front sight
- Rear sight
- Front sight tool
- Red threadlocker
- Insert with instructions
Frequently Asked Questions
Will these R3D night sights fit my Glock?
This set is made for a broad list of standard-height Glock models, including the 17, 19, 22, 24, 26, 27, 31, 36, and 38. They use standard Glock dovetail cuts and work with most factory slides. If you're running an MOS or optic-cut slide with a suppressor-height requirement, you'll want a taller sight instead, since these are standard height.
Can I install the R3D sights myself or do I need a gunsmith?
You can install them at home with a sight pusher tool or a hammer and brass punch. XS includes the front sight tool, threadlocker, and instructions in the box, and their rear dovetail design is built to reduce the force needed compared to many other sights. That said, if you're not comfortable working on your slide, a gunsmith can knock it out quickly.
How is the green front sight different from a standard three-dot setup?
The front tritium vial is paired with a green photoluminescent Glow Dot that absorbs ambient light and stays lit before it's dark enough for tritium alone. Because the front glows a bit brighter than the blacked-out rear, your eye naturally drives to the front sight instead of splitting focus across three equal dots. It's a faster, more intuitive sight picture in real-world lighting.
Do these work in daylight, or just at night?
Both. The high-contrast green front ring makes the front sight pop in bright daylight, while the tritium and Glow Dot take over as the light drops. That day-and-night visibility is the whole point of the R3D design, so you're covered whether you're at the range at noon or clearing a dark hallway.





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