I did this a few years ago, sold the rifle. I still have the mounts in a drawer in the garage somewhere, I will try to dig out and post photos.
I found the mounts I used on my model 24. They are the B-square ones exactly like the one shown in MtnBoomer's post. The model # on the package is #17025. I mounted a Burris Fastfire red dot to mine. It has (or had at the time) a Weaver cross slot base which was larger than the slot in the B-Square mount. I used a file to open up the slot, it was easy as the B-Square mount is aluminum. The work is not visible because naturally the red dot mount covers it. I hope it works out for you!
