The Effect of Concealed-Carry and Handgun Restrictions on Gun-Related Deaths: Evidence from the Sullivan Act of 1911

The 1911 NY State Sullivan Act (SA) outlawed carrying concealable firearms without a licence, established strict licencing rules, and regulated the sale and possession of handguns. We analyse the effects of the SA using historical data on mortality rates, pistol permits, and citations for illegal carrying. Our analysis of pistol permits and citations reveal clear initial effects of the SA on gun-related behaviours. Using synthetic control and difference-in-differences methodologies, our main analyses show no effects on overall homicide rates, evidence of a reduction in overall suicide rates, and strong evidence of a large and sustained decrease in gun-related suicide rates.