Artillery installation of infantry support on the chassis of the truck KATZ-02. The caliber of the gun is 57mm, loading from the stores for 4 shells. The gun S-60 is also installed on the ZSU-57-2, this anti-aircraft self-propelled unit is real, you can watch the video. 57-mm shells into the Board calmly penetrate the leopard and other tanks, which makes this machine extremely effective for ambushes. Also the gun can shoot at air targets, it is particularly dangerous for helicopters. However, the main task of the machine - support infantry and destruction of enemy light armored vehicles (armored personnel carriers, infantry fighting vehicles, etc.). Finally, apologize if the text above does not make sense or logic, I don't know English and use a translator.