Big Dot Express Sights
All our Big Dot Express sight systems feature a large, easy-to-see front sight. The front sight uses a unique photoluminescent Glow Dot that absorbs ambient light and emits a gentle glow when lighting is limited. The dot's convex shape provides a larger surface area, maximizing light absorption and intensifying the Glow Dot's brightness. Our primary objective when designing the Big Dot Express sights was to make them large and highly visible, addressing common issues such as aging eyes and deteriorating vision. The rear sight features a shallow V shape, providing a simple, low-profile design with a superior field of view.
To prevent confusion between the front and rear sights in high-stress situations, we adopted the "dot-the-i" sight picture. This sight picture features a tritium dot in the front sight and a line in the rear sight, facilitating quick, accurate target acquisition. In most gunfights, both the victim and attacker are in motion, with the victim primarily focused on the threat. Big Dot Express sights address these challenges by being big, bright, and easy to see, regardless of the scenario or time of day.
DXT2 Sig Sauer Sights Overview
Our DXT2 tritium sights are an improvement on our original flagship product. The front sight features a yellow or orange photoluminescent glow dot surrounding a tritium vial in the center. The combination gives you a vibrant front sight in bright light and a glowing sight in low light. The shallow V rear sight features a vertical tritium vial for low-light indexing and is low-profile to help draw your eye to the front sight.

DXT2 Features:
- Tritium-powered front and rear sight
- High-contrast yellow or orange front sight
- Glow dot absorbs ambient light and glows in low light
- Simple dot-the-i sight picture for faster sight acquisition
- Kit Includes: front sight, rear sight, hex wrench (if applicable), red threadlocker, insert with instructions
Large and Easy to See Front Sight — Big Dot Measures 0.188".
All our products are made from durable CNC-machined steel, and we offer a 12-year warranty on Tritium products.
| Sight Specs | Front Sight | Rear Sight | Front Dot Width |
|---|---|---|---|
| Sig P320, P225, P226, P228, P229, SP2009, SP2340, X-Macro, X-Compact | 0.300" | 0.220" | 0.188" |
| Sig P365, P365XL | 0.300" | 0.180" | 0.188" |
| Sig P220, P227 | 0.300" | 0.240" | 0.188" |
| Sig 1911 RCS | 0.285" | 0.340" | 0.188" |
| Sig SP2022 | 0.300" | 0.195" | 0.188" |
Installation Instructions
XS DXT2 sights can be installed with a hammer and a punch.
View Written Installation Instructions.
About XS Sights
XS Sights is a second-generation, family-owned business in Fort Worth, TX. We specialize in high-performance gun accessories, ranging from Sig Sauer night sights to solutions for AR, AK, and lever-action firearms. Proudly made in-house, our products reflect our passion for quality and innovation. Upgrade today, we make the best Sig P229 sights for self-defense.
WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects or reproductive harm. (For more information go to https://www.p65warnings.ca.gov/)
- Surface Finish:
- Black Oxide
- Sight Picture:
- Express
- Sight Height:
- Standard Height
- Front Sight Size:
- Big Dot
- Illumination:
- Tritium Front & Rear
- Color:
- Orange
- Color:
- Yellow
- Model:
- Sig P320
- Model:
- Sig P225
- Model:
- Sig P226
- Model:
- Sig P228
- Model:
- Sig P229
- Model:
- Sig SP2009
- Model:
- Sig SP2340
- Model:
- Sig X-Macro
- Model:
- Sig X-Compact
- Model:
- Sig P365
- Model:
- Sig P365XL
- Model:
- Sig P220
- Model:
- Sig P227
- Model:
- Sig 1911 RCS
- Model:
- Sig SP2022