The swinging-block action Aydt system was designed by German gunsmith Carl Wilhelm Aydt (1847-1923) and patented in 1885. Aydt target rifles and pistols (known under German terms Schuetzen and Scheibenbüchse) were produced until 1939 by C.G. Haenel Waffenfabrik, F.W. Heym Gewehr-Fabrik, August Schüler and other manufacturers. Most popular chambering for these guns was 8.15x46R.
Bron: imfdb.org