HiViz is known by many shooters as a company that makes fiber optic sights. One of their handgun products allowed a maximum amount of light in, as it had little protection around it. The other version did not let nearly as much light in, but provided a greater degree of protection to the sight.
For 2013, HiViz is offering a third option. In this front sight, the shooter gets a greater degree of light coming into the sight, but there is a skeletonized steel body around the sight providing more protection than previously available.