HIVIZ Muzzle Loader Sight We call it a seamless sight picture. The HIVIZ front sight is so bright that there is no need to jump focus between the front sight and target. What does it do for the shooter? It provides fast target acquisition with remarkable accuracy. The 3/8" dovetail steel base is designed in the traditional Hawken style. Interchangeable green (the brightest) and orange light pipes in three sizes, 3/32", 7/64" and 1/8", are included with every base. For low light, bright light, deer, elk, bull's-eyes or plinking, there is a HIVIZ color and size that will work for you. The DOVM is available in .315 height.