With the exception of the Czechoslovaks who kept pre-WWII weapons industries going through the Cold War and had a number of unique machine guns and rifles, all the Warsaw Pact nations seemed to have contented themselves with exact copies or minor variations of standard Soviet kit. Was their any particular reason for this, and if so why were the Czechs exempt?
Could for instance, the DDR have made and issued an STG in 7.62x39?