California Can Do What It Wants (But It Can't Do That)

The panel affirmed the district court’s summary judgment in favor of plaintiffs challenging California Government Code § 31310, which bans possession of large- capacity magazines (“LCMs”) that hold more than ten rounds of ammunition; and held that the ban violated the Second Amendment.
The Ninth Circuit employs a two-prong inquiry to determine whether firearm regulations violate the Second Amendment: (1) whether the law burdens conduct protected by the Second Amendment; and (2) if so, what level of scrutiny to apply to the regulation. United states v. Chovan, 735 F.3d 1127, 1136 (9th Cir. 2013)
The panel held that under the first prong of the test, Cal. Penal Code § 32310 burdened protected conduct. First, the panel held that firearm magazines are protected arms under the Second Amendment. Second, the panel held that LCMs are commonly owned and typically used for lawful purposes, and are not “unusual arms” that would fall outside the scope of the Second Amendment. Third, the panel held that LCM prohibitions are not longstanding regulations and do not enjoy a presumption of lawfulness. Fourth, the panel held that there was no persuasive historical evidence in the record showing LCM possession fell outside the ambit of Second Amendment protection.