The German tank destroyers "Panzerjäger" ("tank hunters") were basically made by taking an existing anti-tank gun and mounting it on a convenient chassis to give mobility, usually with just a three-sided gun shield for crew protection. For instance, 202 obsolete Panzer I light tanks were modified by removing the turret emplacing a Czech 4,7cm KPÚV vz. 38 (47 mm) anti-tank gun giving the Panzerjäger I self-propelled anti-tank gun. German tank destroyers based on the Panzer III and later German tanks were unique in that they had more armor than their tank counterparts.