The FT Bullseye Front Sight is so intuitive that it will make you a much faster and accurate marksman. Similar to reflex sights, using the FT Bullseye provides the shooter with an aim point in the form of an illuminated dot. Shooters can enjoy intuitive and fast target acquisition. The Fiber-optic is used in bright light or day shooting and the premium-grade Tritium provides instant illumination at night or in low-light conditions. The Mepro FT Bullseye Front Sight was designed to fit standard holster designs with no adjustments, allowing the shooter to just install the sight to the slide and hit the range. Sight Length: 0.19″. Sight Width: 0.26″. Sight Height: 0.27″.