Ka kammala wannan jumla: Akwai kuma wani bindiga mai bindiga na ZiS-2 da ake kira ZiS-4. A cikin 1941, a cikin ƙoƙari na inganta aikin anti-tank na T-34 tank mambobi na Morozov Design Bureau gwaji sanye take da shi da ZiS-4. An gina ƙananan adadin waɗannan tankunan T-34-57 kuma ana amfani da su azaman mafarautan tanki. Wannan ra'ayin ya sake fitowa a 1943 bayan
Yaƙin Kursk saboda Jamus ta yi amfani da manyan tankokin Tiger da Panther. Kawai an samar da adadin T-34 wanda aka sanye da sigar da aka canza ta hanyar bindigar ZiS-4M tare da sabon breech don sauƙaƙe samarwa. Kodayake bindigar mai saurin gudu tana da karfin kutsawa zuwa F-34 ƙananan nauyin harsashinsa yana nufin cewa ba zai iya yin harbi mai ƙarfi ba don amfani da shi gaba ɗaya. Babban mafita ga tanki shine tsara sabon hasumiya wanda zai ba da damar amfani da bindiga mai nauyin 85 mm; sabon samfurin an kira shi T-34-85.