For those interested, Australian Gun Laws:
Anyone in Australia wishing to buy, own, or use a firearm is required to have a Firearms Licence and must be over the age of 18, although there are exceptions. In Queensland, unlicensed individuals may use firearms legally under the law if the proper forms are filled out beforehand. Minors can use, but not legally own firearms under a minors licence and/or with parental consent. Applicants for a firearms licence wishing to own a firearm must have a secure safe storage unit bolted to the wall or floor or have it weigh more than 150kg if it is used only for the storage of category A, B and C firearms.
For every firearm, a purchaser must obtain a Permit To Acquire. For each firearm a "Genuine Reason" must be given, relating to pest control, hunting, target shooting, or collecting. The law excludes self-defence as a reason for issuing a licence.
Firearms in Australia are grouped into Categories with different levels of control. The categories are:
* Category A: rimfire rifles (not semi-automatic), shotguns (not pump-action or semi-automatic), air rifles, paintball guns, and airsoft/soft air rifles (depending on State). (For Category A an applicant must give an acceptable "Genuine Reason" for owning that firearm.)
* Category B: centrefire rifles (not semi-automatic), muzzleloading firearms made after January 1, 1901 (For Category B and higher, the applicant must prove a "Genuine Need" for each firearm of that category.)
* Category C: semi-automatic rimfire rifles, pump-action or semi-automatic shotguns holding 5 or fewer rounds. (Restricted: only some farmers and collectors can own working Category C firearms)
* Category D: semi-automatic centrefire rifles, pump-action/semi-automatic shotguns holding more than 5 rounds (Category D Firearms are effectively banned: only those who have an occupational need of culling large animals may own a functional Category D weapon [1].)
* Category H: handguns including air pistols, deactivated handguns and airsoft guns not exceeding 65 cm in total length. Target shooters can acquire handguns of .38" calibre or less.
(Participants in "approved" competitions may acquire handguns up to .45", currently Single Action Shooting and Metallic Silhouette. IPSC shooting is not "approved" for the larger calibres, for unstated reasons. Category H barrels must be at least 100mm (3.94") long for revolvers, and 120mm (4.72") for semi-automatic pistols, and magazines are restricted to 10 rounds. (In most other countries low-powered air/soft air/BB handguns are completely free of licencing requirements.)
* Category R: restricted weapons: machine guns, rocket launchers, assault rifles, flame-throwers, anti-tank guns, Howitzers, artillery, .50-calibre BMG weapons, etc. (Collectors in some states only, weapons must be comprehensively deactivated. Deactivated firearms are still subject to the same storage and licensing requirements as 'live' firearms in many States.)
Theres other laws about transport which I can't find a source to. Basically to transport any firearm it must be unloaded and locked in a metal case which is then secured to the car.