Hello all. I did purchase a Ruger Mark IV Target, 5.5 inch barrel. I like it a lot. The iron sights that come on it are ok. I may think about replacing them. I also mounted a Vortex, traditional style red-dot on it. I do not care for this set up. I believe I will try a small prism type sight next. I am looking at the Vortex. Anyone have any insight or opinions. Going to use the pistol for target use, plinking, and small game hunting. Please assist with options for good reflex style optics. Thanks in advance.