Meprolight Hyper-Bright fixed pistol sight features an extremely bright contrasting colored ring front sight. The tritium is illuminated green to provide low-light and nighttime aiming capabilities. The contrast in colors of the two components helps the shooter focus on the front sight quicker, which is critical in defensive and competitive shooting. Front Sight Length: 0.60". Front Sight Width: 0.14". Front Sight Height: 0.23". Rear Sight Length: 0.92". Rear Sight Width: 0.69". Rear Sight Height: 0.42".