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December 18, 2019

Large-Capacity Magazine Bans Linked With Fewer Mass Shootings, Deaths

JAMA. 2020;323(2):108-109. doi:10.1001/jama.2019.20457

In a recent study, US states without large-capacity magazine (LCM) bans had more high-fatality mass shootings and higher death rates during these assaults. The findings, recently detailed in the American Journal of Public Health, could support banning these efficient ammunition-feeding devices.

Military-style “assault weapons” get a lot of attention from policy makers and the public, but most high-fatality mass shootings are perpetrated with semiautomatic handguns. Large-capacity magazines arm all types of semiautomatic firearms, not just assault weapons, so banning the devices could have a greater effect on such incidents, the study authors said.