By: Azrael, Deborah and Blocher, Joseph and Cook, Philip J. and Hemenway, David and Miller, Matthew,

For a paper that has not yet been through peer review or even been formally published, William English’s "2021 National Firearms Survey" has been remarkably prominent in gun rights advocacy and scholarship. As of June 2024, it has been cited in roughly 50 briefs, invoked at oral argument in the Supreme Court and multiple courts of appeals, and regularly cited in public writings and published academic work.

This response is offered in the spirit of a peer review. Our focus is on methodological issues, questionable statistical results, and problematic conclusions. Because of serious methodological issues, the draft fails to provide a reliable estimate of the number of defensive gun uses, the stock of AR-15s, or the actual protective value of or frequency with which AR-15 type firearms have been used. The paper should not be used as an authoritative source.

Duke Law School Public Law & Legal Theory Series No. 2024-50