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The XS Sights R3D is a suppressor-height tritium night sight set built for your Glock, and it's designed around one simple idea: your eye should snap to the front sight no matter the lighting. The front post pairs a tritium vial with the orange Ember Glow Dot, a photoluminescent ring that soaks up ambient light and keeps glowing when the sun goes down. Because the tritium lamp also charges that Glow Dot, the front sight reads brighter than the rear, so your focus naturally drives downrange instead of getting stuck on the back sight.
The rear is a two-dot tritium setup with a blacked-out face, which bumps up contrast against that bright orange front. The wider rear notch leaves plenty of daylight around the front blade, so target acquisition stays fast without giving up precise alignment. The rear also has an overhang and anti-reflective lens that cut glare in bright conditions, plus a ledge you can hook on a belt or holster for one-handed slide racking if your other hand is ever occupied.
Every R3D sight is CNC machined from solid steel bar stock at the XS in-house shop in Fort Worth, Texas, so these hold up to drops, racking off barricades, and years of duty carry. The suppressor height matters for more than clearing a can. That extra height lets the set work as backup iron sights that co-witness with several popular red dots on MOS slides, including the Trijicon RMR and SRO, Holosun 507c series, and Vortex Viper.
This set covers a huge chunk of the Glock lineup across Gen 1 through Gen 5, including the 17, 19, 22, 23, 24, 26, 27, 31 through 36, and 38. Whether it's an everyday carry gun, a nightstand pistol, or a suppressor host, the R3D gives you a proven front-sight-focused sight picture that works in any light.
This set fits standard-frame Glocks across Gen 1 through Gen 5, including the 17, 19, 22, 23, 24, 26, 27, 31 through 36, and 38. It does not fit the slim single-stack models like the 42, 43, 43X, or 48, which use a different sight set. If you're unsure about your exact model, double-check your generation before ordering.
Yes, that's one of the main reasons to go suppressor height. The taller sights are built to co-witness as backup irons on MOS slides with several popular optics, including the Trijicon RMR and SRO, Holosun 507c series, and Vortex Viper. XS has tested and confirmed those, so you get a solid backup sight picture if your dot ever goes down.
The set comes with a front sight tool, red threadlocker, and instructions to get you started. The rear sight installs with a sight pusher tool, and many folks also use a hammer and punch, though a pusher gives you the cleanest results. If you're not comfortable driving sights yourself, a gunsmith can knock this out quickly.
The orange Ember Glow Dot is photoluminescent, so it absorbs ambient light and glows on its own in low light. On top of that, the front tritium vial charges the Glow Dot, so the front sight reads brighter than the rear at all times. That contrast pulls your eye to the front post fast, which is exactly what you want under pressure.
| UPC | 647533046787 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GLR021P6N |
| Color | 3 DOT NIGHT SIGHTS |
| Length | 8.1000 |
| Model | |
| Product Type | Night Sight |
| Shipping Weight | 0.13 |
| Style | 3-Dot Set |
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