The XS Sights R3D Night Sight Set for Glock 43 delivers a precision-engineered tritium night sight solution that keeps you on target in any lighting condition — from bright daylight to complete darkness.
- Traditional 3-dot tritium notch-and-post sight picture for instinctive alignment
- Orange front sight with Ember® Glow Dot Technology for enhanced daytime visibility
- Front tritium lamp continuously charges the Ember dot for a brighter front sight
- Blacked-out rear sight maximizes contrast and drives focus to the front sight
- Compatible with standard holster options — no fitment workarounds required
- Backed by XS Sights' industry-leading 10-Year No-Questions-Asked warranty
Who This Is For
The XS R3D sight set is ideal for Glock 43 owners who demand reliable low-light performance in a compact carry pistol — whether you're a concealed carry permit holder, a home defender, or a competitive shooter who trains in varied lighting environments. The bold orange Ember front dot provides a decisive sight picture that works just as well at the range under the noon sun as it does during a low-light defensive scenario.
Specifications
| Brand | XS Sights |
|---|---|
| Model | R3D Night Sight Set |
| Compatible Firearm | Glock 43 |
| Sight Configuration | 3-Dot Tritium, Notch & Post |
| Front Sight Color | Orange (Ember® Glow Dot) |
| Rear Sight Finish | Blacked-Out |
| Night Sight Technology | Tritium + Ember® Photoluminescent |
| Holster Compatibility | Standard Glock 43 Holsters |
| Warranty | 10-Year No-Questions-Asked |
| Manufacturer | XS Sights (Third-Party Aftermarket) |
Frequently Asked Questions
How does the Ember® Glow Dot Technology work alongside the tritium lamp?
Ember® Glow Dot Technology is a photoluminescent material embedded in the front sight that absorbs ambient light and re-emits it as a bright glow in low-light conditions. What makes the R3D system uniquely effective is that the tritium lamp inside the front sight continuously "charges" the Ember dot even without any external light source. This means the front sight remains visibly brighter than the rear tritium dots at all times, naturally drawing your eye to the front sight and keeping your focus downrange where it belongs.
Will these sights fit my Glock 43 without any modification?
Yes. The XS R3D sight set is designed as a direct drop-in replacement for the factory sights on the Glock 43. Installation uses standard Glock sight tools and the sights are compatible with most production holsters cut for the G43's original sight profile. No gunsmithing or milling is required, though professional installation is always recommended if you're not familiar with the process.
How long will the tritium in these sights remain bright and effective?
Tritium is a radioactive isotope that naturally decays over time, with a half-life of approximately 12 years. In practical terms, most tritium night sights — including the XS R3D — provide bright, reliable illumination for 10–12 years of normal use. XS Sights backs this product with a 10-Year No-Questions-Asked warranty, so you're covered for the useful life of the tritium. After that period, brightness will have diminished noticeably and replacement is recommended.