I recently acquired an Oberndorf Mauser type S in 7x57 that is all original except that someone has removed the rear sight staff and spring. The base appears to be similar to the ones used on military rifles except it has a straight slope for elevation rather than a curved one. Will a military staff and spring work? it has a fold down peep sight mounted on the receiver ring now.

I learn something every day, and a lot of times it's that what I learned the day before was wrong