B-Square makes a scope mount that clamps onto the Mauser rear sight without damaging anything, and no gunsmithing, hole-drilling etc. required.
I used one of these to mount a BSA red dot sight on a Swedish Mauser... My daughter, 18 at the time used this setup for her introduction to shooting a high-power rifle.
Her first three shots went into 1" at 100 yards.
The B-Square mount gives you a good scout type scope mount, just put a 2X or maybe 4X pistol scope on there and you're ready to go.