I could carry it with me when I next fly over ... ha ha only joking as it could be years in my hands ...

It would probably need an export licence from here plus ??? Has that been taken care of? Is it held in private hands or with a gun dealer?

One of the Queensland firearms dealers might be able to arrange the paperwork as well. For a fee is my guess of course. Hopefully one of our Queensland members can provide you with some help.