Those numbers dont even take into account the submachineguns being made in mass production by gangs.

http://www.thefirearmblog.com/blog/2015/03/10/australian-pol...

http://www.thefirearmblog.com/blog/2014/04/04/australian-mot...

http://www.perthnow.com.au/news/western-australia/sub-machin...