Leica Calonox ARM52-57 Rusan Thermal Sight Clip-On Adapter 59050

Leica Rusan Sight Adapter ARM52-57 Black. It's a throw-lever tensioning sleeve that threads onto the eyepiece end of the Calonox and slides over the objective lens housing. Specifications for Leica Rusan Sight Adapter ARM52-57: Manufacturer: Leica Color: Black Package Contents: Leica Rusan Sight Adapter ARM52-57 Leica 59050: Rusan Sight Adapter ARM52-57 Black