Express Big Dot Tritium Night Sights - Sig Sauer

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 PRO Sig Sights Overview

Our DXT2 PRO tritium sights are optimized for self-defense situations. Our Big Dot front sight, featuring tritium and a photoluminescent glow dot, ensures optimal visibility in both bright and low-light conditions. The bright Green color offers a high contrast front sight in daylight and glows brightly in low light. The Black Nitride surface finish provides enhanced corrosion resistance, making the set ideal for EDC use in sweaty or humid environments.

DXT2 Sig Sauer Sights Overview

Our DXT2 tritium sights improved 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 PRO Features:

• Tritium-powered front and rear sight glows in low light/no light
• High-contrast green front sight
• Glow Dot absorbs ambient light and glows in low light
• Black Nitride finish for increased corrosion resistance
• 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

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. 

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 Springfield 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 Springfield Armory XD 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/)