The only one I know of is the Leupold FX-II 2.5X28 scout scope.

You can not use a handgun scope because the eye relief is too long and you can't use a standard scope becasue the eye relief is too short.



I am sure you are well aware but just in case a little FYI. I get nimrods in the store all the time that purchase the Ruger scout rifle and then want to put something like a Zeiss 3.5-10X50 on top like a regualr rifle. It aint gonna work. The whole idea behind this rifle is to mount a low power scope foward over the barrel so that you can track a moving target in thick brush with BOTH EYES OPEN. It makes for a very quick handling bolt action rifle that allows lightning quick target acquisition and follow up shots.