XS DXT2 Pro Night Sights offer the best front sight visibility in all lighting conditions. DXT2 Big Dot sights drive focus to the front sight using a high-contrast front and a V-notch rear for an unobstructed view of the front sight. DXT2 Big Dot front sights use a patent-pending glow dot that absorbs light and glows in low light levels before it is dark enough to see the tritium. The dot-the-"i" sight picture prevents confusing the front and rear sights in high-stress situations. The wide field of view increases visibility of the front sight and of the threat downrange.The improved DXT2 PRO line offers users increased durability and corrosion resistance due to the upgraded tritium lamps and Black Nitride surface finish. Another unique change is the green glow dot front sight. Green is a great bright light option that glows extremely bright in low light. DXT2 PRO Series sights offer the same exceptional benefits as the original big dot sights - large and easy to see front sight, sim...