Backyardsniper
AH elite
I know this will be wildly unpopular with some people but I figured I would put the information out there. I found what I think is a great red dot mounting solution for the Kreighoff. I called them about this a long time ago and I had already acquired the RMR mount that clamps to the rear scope base so I have not actually installed it on my rifle yet but when he called.me and said they had a batch ready I went ahead and purchased one. I think it presents the lowest/most secure mounting option for a red dot on a double. You can probably even cowitness the iron sights.
Mounting a Red Dot Sight on a Krieghoff Classic
alanrhone.com