When you need to make a fast and accurate shot, brightness counts. We brought fiber-optics to the shooting sports industry years ago for this very reason. We have now paired them with our tritium night sights to create a consistently bright sight picture day or night. Our patented combination of Tritium and Fiber-Optic technologies unites the best of both worlds. Whether you are in glaring daylight or complete darkness, you can count on TFO to provide a bright and reliable sight picture. Features: Uses our patented TFO technology The ultimate handgun sight Unbelievable transition through all light conditions Glows-in-the-dark No batteries required Concealed fiber cannot be seen by target Fits standard holsters Snag resistant design Yellow fiber-optics are intended to appear less bright than green to increase contrast between front and rear sights