The High Power Airgun, that was designed by Willi Korth on February 15th 1950, had an air piston, that was sealed by three piston rings. That way the performance could be highly improved by the means of that time.
Korth himself produced a sample gun in the factory Hubertus-Metall-werke in Mölln.
A small series of this gun was produced by this company and distributed under the name Original "Jung-Roland".
The gun has a weight of 3820 grams.