Everytown Law Files Colorado Supreme Court Amicus Brief on Behalf of the City of Boulder, and Joined by the City and County of Denver, in Support of Colorado’s Prohibition on Large-Capacity Magazines (Rocky Mountain Gun Owners v. Polis)

September 9, 2019

DENVER, Colo. – The City and County of Denver and the City of Boulder filed this
amicus brief in the Colorado Supreme Court in defense of a Colorado statute
prohibiting the possession of large-capacity magazines (LCMs). This brief explains
how Denver’s and Boulder’s experiences as two of Colorado’s largest and most
densely populated cities – both of which have enacted their own local LCM
prohibitions to protect their citizenry – demonstrate that the state law is closely
related to Colorado’s interests in public health, safety, and welfare, and thus
constitutional under the state constitution. Examining the leading social science
research, the brief explains that, consistent with Denver’s and Boulder’s
experiences, the use of LCMs makes mass shootings and other gun violence
incidents more dangerous and more deadly. And the brief also shows how, as the
empirical data demonstrates, are not necessary, and rarely used, in self-defense –
and how this aligns with the on-the-ground experiences and understanding of
Denver and Boulder. Everytown Law represented the City of Boulder on this

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