This is a XS Sights known as the Big Dot Tritium Front, model SW-0032S-5Y.
XS DXT2 Big Dot Tritium 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.
Features:
10 Year Warranty - No Questions Asked night sight warranty
Tritium Powered Front & Rear Sight -Glows in low light to aid in sight alignment
Fits standard holster options
Quality Manufacturing
