Rusan Calonox 2 Adapter M43X0.75 Thread allows you to join a Leica Calonox 2 Sight with any scope. It’s a throw-lever tensioning sleeve that threads onto the eyepiece end of the Calonox 2 and slides over the objective lens housing. The Rusan Adapter is a simple way of attaching a thermal clip-on device to your day scope’s objective. Simply slip it over the front lens of your scope and move the lever to the “clamp closed” position. There is no change on your zero when you add the clip-on thermal optics.
For a Rusan Adapter Sizing check our Compatibility Table HERE
The adapter slips over approximately 1.4” of your objective lens so there is lots of clamping surface area for a great hold. The inside of the adapter is lined with a special film to provide for extra gripping power and assures a scratch free attachment. To determine the exact model you need consult our list below or measure in millimeters the outside diameter of your objective lens at its end. The measurement needs to be exact so use calipers.
You will need to measure in millimeters the outside diameter of your objective lens at its end. It is not the objective lens size of your scope that determines the Rusan Adapter you need, it is the outside diameter of the housing.
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