I am looking for a pre-war Krieghoff o/u shotgun to either examine or possibly buy. The particular model was patented under DRP 496390 and can be distinguished from the other o/u's by the absence of locking barrel extensions. It is similar to the post-war K32 in appearance but does not have the locking top shroud. I don't think many were made as they were complicated and expensive. They were also quite lightweight and might have been popular with target shooters.
Fred