Indiana’s firearm seizure law was associated with a 7.5% reduction in firearm suicides in the ten years following its enactment, an effect specific to suicides with firearms and larger than that seen in any comparison state by chance alone. Enactment of Connecticut’s law was associated with a 1.6% reduction in firearm suicides immediately after its passage and a 13.7% reduction in firearm suicides in the post–Virginia Tech period, when enforcement of the law substantially increased. Regression-based sensitivity analyses showed that these findings were robust to alternative specifications. Whereas Indiana demonstrated an aggregate decrease in suicides, Connecticut’s estimated reduction in firearm suicides was offset by increased nonfirearm suicides.
Risk-based firearm seizure laws were associated with reduced population-level firearm suicide rates, and evidence for a replacement effect was mixed.