Interesting lock up here. It's a Reimer Johannsen.

More pictures here: Click on visit and scroll down.

https://www.google.com/search?...mgrc=AigfH0E4fngjdM:

I can recommend the work and approach of Austrian rifle builder Alois Mayr http://www.mayr-jagdwaffen.com/english/takedown.php

@ CZ. Alois Mayr is German. His shop is in Mittenwald in Bavaria. It is close to the Austrian border. He is a master gunmaker and an absolutely very nice guy. He built my custom single shot take-down rifle using a Hagn action in 2012.