The Hira Arms dealer in Lahore can import them. He says he is legit, but I doubt it, still he can import. Have you checked with ARB Australia directly? I know the Dubai ARB can deliver, i was in touch with them, but they are very expensive.
Also do a search, there was a guy in Karachi who has bringing them in left, right and center.
And do let me know if you come across a solution, maybe both you and I can order together?