On 16 June 2017 , the Minister for Justice Michael Keenan announced that a national firearms amnesty would commence on 1 July 2017 for three months until September 30 , to hand in unregistered or unwanted firearms . The amnesty had been approved in March 2017 by the Firearms and Weapons Policy Working Group ( FWPWG ) to reduce the number of unregistered firearms in Australia following the Lindt Cafe siege in 2014 , and the 2015 shooting of an unarmed police civilian finance worker outside the New South Wales Police Force headquarters in Parramatta , Sydney
2015 shooting
2015 Parramatta shooting
Gun law of Australia