If he didnt have a carry licence and if he was charged he would probably get a long good behaviour bond or light prison sentence if it was his first offence. As I said we don't have the Death penalty.
'Capital punishment in Australia has been abolished in all jurisdictions. Queensland abolished the death penalty in 1922. Tasmania did the same in 1968, the federal government abolished the death penalty in 1973, with application also in the Australian Capital Territory and the Northern Territory. Victoria did so in 1975, South Australia in 1976, and Western Australia in 1984. New South Wales abolished the death penalty for murder in 1955, and for all crimes in 1985. In 2010, the federal government passed legislation prohibiting the re-establishment of capital punishment by any state or territory. Neither the Commonwealth nor any of the states will extradite or deport a prisoner to another jurisdiction if they will face the death penalty, and police co-operation with other countries which have the death penalty has been questioned."