Unlike the company's Big Dot line of sights, the XS Sights F8 Night Sights use a more-traditional front-sight post combined with a rear notch for handgunners who are looking for something a bit more in-line with other sighting systems on the market. However, this pair of iron sights still retains several benefits developed from XS Sights' extensive experience in the world of handgun optics. Each pair of XS Sights F8 Night Sights include a large, high-contrast front sight that can be picked up easily during a draw stroke. This front sight features a green tritium lamp that glows brightly in darkness, and the lamp is surrounded by a photoluminescent orange ring that charges in Mfg: Xs Sight Systems