Look at the 2nd pic posted; those are the interesting firearms:
http://www.freerepublic.com/focus/f-news/3096453/posts?page=32#32
Interesting for gun-controlled Australia, but I have more interesting truck guns than those.
Anyhow, aside from violating Australian gun ownership laws, did the police have any evidence that the guns were used in the commission of a crime or that any guns were sold to criminals? If not, the raid was just a demonstration of official power, nothing more.