Thanks Mike
I haven't picked up enough German to recognize "two folding diopters" (in German) if it were right in front of my face and in bold print. Curious, have you seen many of them? Given my understanding of their purpose, and through my own use of them (diopters), I am having difficulty understanding any benefit the large hoop would bring to target acquisition. Have you any field experience with them?
Mark
Mark,
I haven't seen one like this before, either.
With the rather wide aperture and the rear sight (actually the "middle sight" / Kimme) flipped down, this might give a nice ghost ring sight.
This is not a standard accessory, and someone put a lot of thought and work into it. In that time there was a lot of experimenting, with cartridges, bullets, powder loads, locking systems, materials, and also with sights.
Fuhrmann