Periodic opinion page contributor Jimmy Sengenberger, prez of the right-leaning Millennial Policy Center in Denver, says his organization is weighing in on a California court case with potential landmark implications for guns owners.

The center and attorney Joseph G.S. Greelee, a fellow in constitutional studies and firearms policy at the center, filed a friend-of-the-court brief Monday in the Ninth U.S. Circuit Court of Appeals in San Francisco against a pending California state law that criminalizes possession of 10-round gun magazines and even confiscates the magazines from current owners. The law’s implementation had been halted last year in a lower federal court, and that court’s injunction is now being appealed in by the California attorney general. (Doctors for Responsible Gun Ownership and Denver’s Independence Institute are also partnering with the center on the amicus filing in the case, Virginia Duncan, et. al., v. Xavier Becerra.)

Explains Millennial in a press announcement Monday:

…MPC argues vigorously for (the law’s) unconstitutionality.  The Supreme Court has held that the Second Amendment protects arms “in common use.” Magazines capable of holding more than 10 rounds are some of the most common arms in the country: tens of millions of Americans own over 100 million of these magazines nationwide. California’s law is extraordinary because it not only bans these extremely popular arms, but it actually confiscates those arms from law-abiding citizens who already own them.

What’s at stake for Millennials? Says the youthful Sengenberger in the announcement:

“As a group focused on the future and representing the interests of young Americans, the Millennial Policy Center has a keen interest in the long-term viability of the constitutionally-protected right to keep and bear arms … Ronald Reagan once said that freedom is never more than one generation away from extinction.  We take this seriously, and we will engage in policy debates for freedom, including in the courtroom.”