HIVIZ® LiteWave® Front Sight for Glock pistols. Fast front sight acquisition is what it's all about and this fiber optic front sight for Glock pistols gives you a bright dot on your front sight. The fiber optic tube gathers ambient light and magnifies it at the end of the tube... HiViz calls these "LitePipes" and they come in different colors. Fits all Glock models. Includes Green, Red and White replaceable LitePipes.