Your existing rings probably will be compatibel with the base you install on the receiver, but I can't say for sure.

Also, you may be disappointed in the accuracy you get with this setup. The barrel and the scope will not be precisely locked together. You may do OK if the barrel nut is tightened as much as you can get it, but I've seen guys get frustrated with POI changes. Some guns seem to work just fine.

If you don't need to shoot more than say 75 yds, installing better rifle sights that allow you to get your POI where it should be may be the best bet. At least with this setup, the front and rear sights are fixed to the barrel.