Australia's constitution does not contain a right to bear arms. Unlike the U.S. Second Amendment, there is no constitutional guarantee of private firearm ownership.
Following the 1996 Port Arthur massacre, Australia enacted the National Firearms Agreement:
Firearm ownership is a privilege, not a right. Licensed shooters (hunters, sport shooters, farmers) may possess firearms under strict conditions. Handguns heavily restricted.
Australia has low firearm homicide rates and no mass shootings since 1996.