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Glock factory sights get the job done, but they're not winning any speed contests. The XS Sights DXT2 Big Dot swaps that plastic front blade for a fat 0.188" photoluminescent Glow Dot in optic yellow, wrapped around a tritium vial. The result is a front sight your eye snaps to the instant you present the pistol, whether you're on a bright range or clearing a dark hallway. That big front paired with the shallow V-notch rear gives you the simple dot-the-"i" picture XS built its name on, which is about as fast and uncomplicated as pistol sights get.
Color choice matters more than folks expect. XS found in their own testing that yellow glows the brightest and soaks up the most ambient light of any of their offerings, so if low-light performance is your priority, this is the front dot to grab. The convex shape of the Glow Dot isn't just for looks either. That curved surface pulls in more light to charge the glow, so it stays lit in that gray zone right before it's dark enough for the tritium to take over. Both the front dot and the rear bar carry tritium, giving you real 24/7 illumination that doesn't need batteries or a charge.
This set covers a wide swath of the Glock lineup, including the 17, 19, 22, 23, 24, 26, 27, 31 through 36, and 38. The sight bodies are CNC machined from steel, so they'll hold up to holster wear, slide manipulations, and years of carry. XS designs these to be installed at home with basic tools, and the kit ships with what you need to get it done at the bench. If you'd rather not tackle it yourself, any competent gunsmith can knock it out in a few minutes.
XS is a family-run shop out of Fort Worth, Texas, and they back the tritium with a 12-year warranty. For an everyday carry Glock, a duty gun, or anyone whose eyes aren't what they used to be, the DXT2 Big Dot is a proven, front-focused upgrade that just plain works.
It comes down to your priority. XS found in testing that yellow glows the brightest and absorbs the most ambient light, making it their best choice for low-light and night performance. Orange tends to pop a little more against varied backgrounds in bright daylight, so if you mostly shoot in daytime conditions that's the trade-off to weigh.
This particular set fits a broad range of the Glock lineup, including the 17, 19, 22, 23, 24, 26, 27, 31, 32, 33, 34, 35, 36, and 38. It's a standard-height set built for iron-sight use. If your Glock is a slimline like the 43 or a 10mm/45 frame like the 20 or 21, you'll want to check for the correct XS part number for that platform.
You can absolutely tackle it at home. XS designs the DXT2 to be a straightforward install and includes a front sight tool, hex wrench, and threadlocker in the box. The rear typically goes in with a sight pusher or a careful hammer-and-punch, and if you get stuck, a local gunsmith can finish the job quickly.
Tritium is a slow-decaying isotope, so it glows continuously without any charging or batteries. XS warranties the tritium illumination for 12 years. The glow will gradually dim over that lifespan, which is normal for any tritium sight, but you're getting years of reliable low-light visibility out of both the front dot and the rear bar.
| UPC | 647533046138 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GL-0009S-5Y |
| Color | Green, Yellow |
| Model | |
| Product Type | Sight |
| Shipping Weight | 0.13 |
| Style | Night Sight |
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