Leftover Yugoslavian M75s. They're easy to get across borders and there's a demand for them among certain groups of people. Semi-related: A significant amount

Leftover Yugoslavian M75s. They're easy to get across borders and there's a demand for them among certain groups of people. Semi-related: A significant amount of illegal firearms in Europe (including the firearms used in recent attacks) were sold legally in Slovakia as "deactivated acoustic expansion weapons" and then "reactivated".