It was used by the Kasernierte Volkspolizei (KVP, Riot Police) and for a short time by the National People's Army.
The SK-1 is the chassis of a Robur Garant 30K truck fitted with an armored body and a light turret.
There is a door in the rear of the hull for the crew to enter, and a hatch on top of the turret.
The turret has several vision slits and a hole for a machine gun.
With the reunification of Germany, most of the SK-1s were scrapped, except for some sent to museums or private collectors.