primarily as a reaction to the mass shooting in Port Arthur, Tasmania, in 1996, where 35
people were killed. Despite the fact that several researchers using the same data have
examined the impact of the NFA on firearm deaths, a consensus does not appear to have
been reached. In this paper, we reanalyze the same data on firearm deaths used in previous
research, using tests for unknown structural breaks as a means to identifying impacts of the …