XS Sights F8 Night Sights for Pistols XS Sights - The Fastest Sights in Any Light The XS F8 Night Sight upgrades your pistol with a bright, easy to see, night sight for encounters under any light condition. The tritium powered sights glow in the dark. The highly visible large green dot in the front and rear sights and the glowing orange front sight ring provide maximum visibility in all light levels. This means faster target acquisition in all environments. The Gold Standard Night Sight for Pistol Self-Defense. You don't have time to line up the stock sights in a dangerous situation. Your vision is naturally pulled downrange to the threat. XS F8 Night Sights are designed for this exact situation. The rear sight design has a wide U-Notch gap to increase the amount of light around the front sight, leading to easier targeting. Sharp corners distract your sight. The rounded corners in the U-Notch help you focus on the top edges of the front sight, allowing for less distracting alignment. Worried about glare? The overhung rear sight ledge reduces glare in bright daylight for greater sight definition. The unique rear sight design also aids in one-handed slide manipulation aiding in faster drawing and firing. In addition, our sights fit in most holsters for concealed carry. Yes, we have thought of and tested for everything.