XS Sights DXT2 Big Dot Night Sight for Glock 20/21/29
XS Sights
$131.29
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XS Sights
XS Sights DXT2 Big Dot Night Sight for Glock 20/21/29
The XS Sights DXT2 Big Dot Night Sight for Glock 20, 21, and 29 delivers lightning-fast target acquisition in any lighting condition, making it one of the most trusted defensive sight upgrades available for full-size and compact 10mm/.45 ACP Glocks.
- Optic Orange convex front dot absorbs light and glows before tritium activates in low light
- Patent-pending glow dot technology offers seamless transition from daylight to darkness
- High-contrast V-notch rear sight keeps focus locked on the front sight picture
- Increased convex surface area maximizes light absorption for a brighter, longer-lasting glow
- Tritium insert ensures reliable visibility in complete darkness without batteries or charging
- Fits Glock 20, 21, and 29 — purpose-built for 10mm and .45 ACP defensive applications
Who This Is For
The DXT2 Big Dot is purpose-built for concealed carriers, home defenders, and law enforcement professionals who need to acquire a sight picture instantly under stress. If you carry a Glock 20, 21, or 29 and demand a sight system that works in a dark parking lot just as reliably as it does at the range on a sunny afternoon, this is the upgrade your pistol needs.
Specifications
| Brand | XS Sights |
|---|---|
| Model | DXT2 Big Dot Night Sight |
| Compatible Pistols | Glock 20, 21, 29 |
| Front Sight | Optic Orange Convex Big Dot with Tritium |
| Rear Sight | V-Notch with Tritium Bar |
| Sight Technology | Tritium + Photoluminescent Glow Dot |
| Tritium Warranty | 12 Years |
| Installation | Standard Glock Sight Tool (Professional Recommended) |
| Made In | USA |
| SKU | RPLXSSGL-0010S-5N |
Frequently Asked Questions
How does the DXT2 Big Dot differ from standard tritium night sights?
Unlike traditional three-dot tritium sights, the DXT2 uses a single oversized convex front dot paired with a V-notch rear. This design forces your eye to naturally center the front sight without conscious effort, which is critical during high-stress defensive situations. The photoluminescent Optic Orange coating also charges in ambient light and glows before it's dark enough for tritium to take over, giving you seamless visibility across all lighting transitions.
Will these sights fit my Glock 20 SF, 21 SF, or Gen 5 model?
The DXT2 Big Dot in this configuration is specifically designed for the Glock 20, 21, and 29 platforms. Short Frame (SF) and standard frame variants of the Glock 20 and 21 share the same sight dimensions, so fitment is generally compatible. However, XS Sights recommends confirming your exact model and generation against their current compatibility chart before ordering, as sight channel dimensions can vary slightly between generations.
Can I install these sights myself, or do I need a gunsmith?
Glock sights use a dovetail mounting system that requires a sight pusher tool or Glock sight tool for proper installation — a standard punch and hammer risks damaging the sight or slide. Many experienced Glock owners install their own sights with the right tools, but if you're not comfortable with the process, a qualified gunsmith can typically install a set of iron sights in under 30 minutes. Goodland Guns can assist with installation — contact the store for details.
