How much of an impact on WWII would the STG-44 have had if it was introduced, and mass produced in 1942?

by HEBushido
AnOldHope

Sorry, but your submission has been removed because we don't allow hypothetical questions. If possible, please feel free to rephrase the question so that it does not call for such speculation, and resubmit Otherwise, this sort of thing is better suited for /r/HistoryWhatIf.