XS Sights DXT2 Pro Series improved Big Dot Line Series Night Sights feature increased durability and corrosion resistance due to upgraded tritium lamps and a black nitride surface finish. The Pro series is also the first XS Big Dot sight available with a green glow dot front sight, which delivers high contrast in bright light while glowing extremely bright in low light. Designed for defensive shooting, they offer the same exceptional benefits of the original XS Big Dots with a large, easy to see tritium front sight with dual-illumination technology for high visibility in low light and a rear, tritium stripe for fast and easy vertical alignment. Available for a wide selection of Glock pistols. Retail: $153.99. Contact: www.xssights.com