By Mitchell L. Doucette, Cassandra K. Crifasi, Alex D. McCourt, Julie A. Ward, Rebecca L. Fix, Daniel W. Webster

Research Summary: We utilized the synthetic difference-in-difference method to estimate the impact of adopting a permitless Concealed Carry Weapons (CCW) law on rates of assaults, robberies, and homicides committed with a firearm and by other means, as well as weapons arrests, from 1981 to 2019. We stratified permitless CCW laws by whether they previously prohibited violent misdemeanants from obtaining a CCWpermitorpreviouslyrequiredlive firearm training to obtain a permit prior to law adoption. Findings robust to sensitivity analyses suggest that states that lost a training requirement to obtain a CCW permit had 21 additional gun assaults per 100,000 population (SE =5.2) (32% increase). Policy Implications: In the wake of the Supreme Court’s decision in New York State Rifle & Pistol Association, Inc. v. Bruen, states should implement CCW permitting law provisions that may reduce the risk of firearm violence. Requiring live firearm training prior to carry aconcealedweaponmayattenuatenegativehealth impacts of deregulation associated with permitless CCW laws. 

Criminology and Public Policy, 2023