You would probably need to find a gun dealer to help you out. To 'acquire' the rifle and export it for you. They will need to charge for the serviuce plus get the funds for buying the rifle.

I will send to a friend who is a dealer in SA, and is a Holts Rep for Australia. If interested he might get in touch.

A Victorian based dealer might also be useful, if any members on here in Vic are also dealers.

The "comp" won't be cheap. The price of the rifle looks decent though.