There are several DMR type scopes on the market that are low powered variables and have ranging and illumination to boot. The Leatherwood (HiLuX) and the Weaver come to mind. Leupold is selling a "patrol rifle" optic same role. The Burris Tac-30 as mentioned.
My Mini-30 is wearing a Leupold 1-4x shotgun scope. The 5 yd parallex does not bother me bit with the x39 cartridge. It has beaten a 2-3 cheap import 4x's to pieces.