Hungarian police raided the set of Brad Pitt's new movie today -- confiscating a massive stash of high-powered guns ... including AK-47s and sniper rifles ... filled with live ammo.
According to Hungarian authorities, the guns -- which were to be used as props in Brad's new zombie flick "World War Z" -- hadn't been properly disabled, and some even contained live rounds.
Authorities seized 85 weapons in total from a warehouse in Budapest -- and called the entire situation "a disaster waiting to happen." Brad was not present during the raid.
A publicist for the film claims ... "We are working with the authorities to resolve the matter and have no further comment at this time."
TMZ placed calls to several people in Pitt's camp -- including his production company and his manager -- so far, no word back.