Hi all, Just recently found the forum and this is my first real posting. My father loved to collect firearms and after his passing last year I am trying to put together a better story of what he has collected. I remember him picking this up when I was a little kid, and of course taking it out the the local rock pit. He has the conversion kit labelled "1937 Efurt 22 conversion kit". As you can see from the pictures, the rifle, it's stamped year 1940, 237 (Berlin Lubecker Maschinenfabrik?). All the part numbers are matching. I would love to find out more about the rifle. I have more photos but appears the 3 exceed my quota. Thanks for any info.