If you mount a scope over the action, it will have to be removed to take out the bolt for cleaning. The cheap rails that fit the Ruger scope mounts will sometimes interfere with the rear sight. You will have to remove the rear sight or modify the rail. The Weigand rail ($50) will work without mods and return to zero if you follow the mounting directions. Amega Range makes a scout rail ($150) that replaces the top fore end cover and the top of the gas block. The red dot or a pistol scope mounts on the rail and leaves the action open so cleaning is easier. There are red dots and scopes with red dots that will fit the Ruger rings. The rings that came with your mini are 1" (25mm). You may need 30mm rings depending on which red dot or scope you go with. The Ruger rings are supposed to return to zero. Personally I like the 1-4X scopes with the lit reticles. They still work if the battery dies. I have a Bushnell Trophy XLT 1-4X24 with an illuminated 4A reticle 30mm tube coming for my AR. If it works out, I will get one or something similar for my Mini 30.