The Australian buy-back might have worked well from the perspective of the number of guns handed in. But a lot of analysis shows that it did not have a significant effect on reducing firearm deaths. It makes it a fair question as to whether it is an appropriate step to take if we truly want to make a change to firearm deaths in NZ.

Australian firearm deaths:
In the 15 years before Port Arthur/the NFA, firearm deaths decreased 2.3 deaths per 100,000 people (5.0 in 1980 to 2.7 in 1995).
In the 15 years after Port Arthur/the NFA, firearm deaths decreased 1.4 deaths per 100,000 people (2.4 in 1997 to 1.0 in 2012).

Australian firearm homicides:
In the 15 years before Port Arthur/the NFA, firearm homicides decreased 0.4 deaths per 100,000 people (0.8 in 1980 to 0.4 in 1995).
In the 15 years after Port Arthur/the NFA, firearm deaths decreased 0.2 deaths per 100,000 people (0.4 in 1997 to 0.2 in 2012).

We need to find examples of countries that have made changes that have had a significant impact on gun deaths and see what we can model off them. Australia don't seem to be the example we should be using. If you have any countries that show significant change please let me know!