Citation(s) from the GunPolicy.org literature library
McPhedran, Samara. 2011 ‘Firearms Registration in Australia.’ WiSH Fact Sheet - Background. Sydney: International Coalition for Women in Shooting and Hunting / WiSH. 22 August
Number of unregistered firearms
The number of unregistered firearms in Australia is unknown, but is estimated to range between 1.5 and 6 million.
[Fact sheet can be downloaded from: http://bit.ly/1GXiT9m]