Leica Rusan Sight Adapter (52-30 ZM-3)

Leica's Rusan Sight Adapter 52-30 ZM-3 allows you to join a Leica Calonox Sight with a Rusan scope. It's a throw-lever tensioning sleeve that threads onto the eyepiece end of the Calonox and slides over the objective lens housing. This version of the 52-30 adapter is for scopes with a Zeiss Mounting Rail.