I know i would not drill and tap a quality Mauser. I've got several Mauser and enjoy firing them all. I bought a scope rail a few years ago out of Shotgun news. Don't remember the company name, but they build great equipment. The scope rail is mounted in place of the rear sights. So you don't have to alter your rifle. This rail is about 8" long and is a weaver rail, and rock solid. I thank I paid $125.00 for it. I don't like the scout as it's just not what I need.