Australians own as many guns now as they did at the time of the Port Arthur massacre, despite more than 1 million firearms being handed in and destroyed, new research reveals.

A University of Sydney study has shown there has been a steady increase in guns imported into the country over the past decade, with the number of privately owned guns now at the same level as 1996.

Gun ownership in Australia is still high, according to University of Sydney research. Credit:Dominic O'Brien

Estimates suggest there were 3.2 million firearms in Australia at the time of the Tasmanian tragedy, in which 35 people were killed and 23 injured.

Philip Alpers, an adjunct associate professor at the university's school of public health, said only time would tell what impact the restocking would have.