Kit for scope adjustment on box

I am thinking on bidding on a pistol box on an auction site. It comes with a scope, but the scope in static (not adjustable for height, I am tall or the in/out position). I did see a kit somewhere but cant recall the location on the web...any ideas?

like this?

https://www.bullseyegear.com/bullseyegear/gil-hebard-adjustable-scope-holder.html