You will note that the Mauser mount has provision for a "see through" feature, which allows the use of iron sights without removing the scope. This was in the day when scopes were considered unreliable additions to the sighting system and preference was given to mounts which allowed unimpeded access to the traditional sighting system. This is no longer the case, and there is no need to compromise stock design to give preference to one system over the other.

Back in the 1930's Griffin & Howe had the same system, with the scope mounted high enough to allow access to iron sights, even with the scope mounted.