MORTAR INVESTMENTS disposes of a unique library of all sorts of manuals, blueprints, spares lists, tutorial videos, plans and handbooks which it is ready to let to its customers. However, please notice that most of the documents are in Czech or in Russian. For those interested, MORTAR INVESTMENTS assures technical translations of the respective parts. Though you might be promised English manuals by other dealers, these do not exist but for small excerpts. 

M-72 manual