The HIVIZ LiteWave H3 Tritium/Fiber-Optic Front Sight for Ruger GP100 combines our brightest in fiber-optic capabilities with the light-emitting benefit of tritium into one sight set, bringing you 24-hour illumination. Now you can have the advantage of day and night performance all in one sight system. These sight sets are rugged and durable, designed for the roughest use, whether it is personal defense and protection, Law Enforcement, or Military. The LiteWave H3 Sight Sets offer the fastest target acquisition and greatest target visibility youll find. Factory height sight. Fits Ruger GP 100 with spring plunger retained front sight. Front Sight Length: 0.834". Front Sight Width: 0.425". Front Sight Height: 0.455".