Court Backs California Ban on High-Capacity Magazines

A federal court has upheld California’s ban on large-capacity ammunition magazines. Find out how this ruling might impact gun laws and your rights.

In March 2025, the Ninth Circuit Court ruled in Duncan v. Bonta to uphold California’s prohibition on large-capacity ammunition magazines. The decision found that the law does not violate the Second Amendment and reaffirmed the state’s authority to regulate firearms in the interest of public safety.

The ban, which applies to magazines capable of holding more than 10 rounds, was first enacted in 2000 and later strengthened through voter initiatives and legislation. This most recent ruling reversed a lower court’s decision that found the ban unconstitutional, citing the Supreme Court’s decision in Bruen as precedent for considering the nation’s historical firearm traditions. The Ninth Circuit, however, emphasized that public safety and modern regulatory needs could still justify such limits.

Supporters of the ruling argue that limiting magazine capacity helps reduce casualties in mass shootings and supports law enforcement’s ability to respond effectively to violent incidents. They note that large-capacity magazines have been disproportionately used in high-profile mass shootings, making their regulation a matter of urgency. Opponents, including gun rights advocacy groups, argue that the ban criminalizes law-abiding citizens and fails to address the root causes of gun violence.

If you own or are charged with possessing a high-capacity magazine, it’s important to understand how this ruling affects you. Consult with a firearms attorney to ensure you remain in compliance with state law. This case may yet reach the Supreme Court, so staying informed is essential.