Americans own tens of millions of modern semiautomatic firearms that are the subject of a pending Supreme Court case, a Georgetown University professor estimated in a study released in August.
The study, which came five years after an initial effort in 2021, includes new data on the popularity of modern semiautomatic firearms that could influence Viramontes v. Cook County, a lawsuit seeking to invalidate a local ban on so-called “assault weapons” first passed by the Illinois county in 2006. The data suggests these modern firearms could be found to be “in common use,” making them protected under the Supreme Court’s Second Amendment precedents in Heller and Bruen.
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