New South Wales Consolidated Regulations(cf 1997 cl 43)
(1) The Commissioner may, on application by a person who is about to leave Australia, issue a permit authorising the person to purchase a firearm (other than a prohibited firearm).
(2) The Commissioner must not issue a permit under this clause unless satisfied that the applicant is about to leave Australia.
(3) A permit under this clause:(a) authorises the holder of the permit to purchase and possess, but not use, the firearm (other than a prohibited firearm) to which the permit relates, and(b) remains in force, unless sooner surrendered or revoked, until the expiration of 7 days from the date of its issue or the purchase of the firearm to which the permit relates, whichever first occurs.