Stop for riflescope?

Hi. I have the airgun RWS (diana) 31 panther which is very strong and a riflescope.
The gun has a hole(for a screw) on it between the rifle scope and me.
It is used for installing a stop in order to make stable the scope during the sudden moving of the air gun during shooting.
Can you help me find a stop?
Thank you.

We have rings by Leapers such as the RGPM-25M4 that have a built in roll pin scope stop. For just a scope stop you can contact any airgun manufacterer or retailer for a selection of them. Some are gun specific.