The most successful scope mount of WWII Germany, was the turret mounts on the ZIELFERNROHRKARABINER 98K (telescopic sight carbine 98K). The low turret mount was preferred over the high turret mount and this reproduction with split rings, makes installation of any scope much easier than having to take the scope apart, in order to silver solder the scope tube to the rings. Also this set comes with shims to use a standard 1" tube scope if you so desire not to use the original ZF39 scope with the 26.5mm tube. The best of both worlds!!! AT A PRICE YOU CAN AFFORD!!!