East German .22 Long Rifle for Margolin Pistol

Here is a typical .22 Long Rifle (for Pistol) 500 round brick made in the 1960’s by VEB Sprengstoffwerk Schönebeck; what is very interesting is the extra label indicating exclusive use in the Margolin (MCM) match pistol. This model was used by the Gesellschaft für Sport und Technik (GST) and in a 1983 manual it is mentioned that it was used in the 25 m free pistol category by males between 14 and 18 years old, and also seniors and women.