These automatic weapons which fire lots of bullets with a single trigger pull are illegal for any civilians to own unless they have acquired a very special Class III permit.
The European political class will not permit this - even though what is "undiscussable" in polite society is a statement of the numbingly obvious if you stroll through Amsterdam and Rotterdam, not to mention Antwerp, Clichy-sous-Bois, Malmo, or any old Yorkshire mill town.
In New York state, you must pass a written exam upon completion of a 10-hour class, after which you are required to buy a small game license and a turkey permit.