In 1977, a project of Contraves AG Oerlikon-Buehrle, Eidgenoessische Konstruktionswerkstaette and Siemens was presented for an air defense shield.

From 1979 to 1980, the vehicles were subjected to rigorous testing, but the project was cancelled in favor of the Rapier missile.

The actual weapon system formed the FlaK-Turm ("Flak turret"), which came from the German Flakpanzer Gepard based on the chassis of the Panzer 68 widened by 180 mm.

The target search radar allowed a continuous and reliable air surveillance and Identification friend or foe while in motion.

The analog computer calculated the deflection angle for the guns, taking account of the daily influences, the continuously measured values Vo and the tilting of the vehicle.