Overview

• Gov. Gavin Newsom signed Assembly Bill 1127 on Oct. 10, targeting semiautomatic pistols that use a cruciform trigger bar and can be readily converted with so‑called Glock switch devices.
• The law expands California’s definition of a machine gun and prohibits licensed dealers from selling specified Glock and similar models beginning in 2026, with exceptions for law enforcement and certain transfers.
• The case, Jaymes v. Bonta, was filed in the Southern District of California by the NRA, Firearms Policy Coalition, Second Amendment Foundation, Poway Weapons & Gear, and two NRA members.
• Plaintiffs argue the measure unlawfully blocks acquisition of handguns in common use, while the statute does not criminalize possession of existing firearms.
• Gun stores reported a run on Glock-style pistols after the signing, and federal data show a sharp rise in seizures of conversion devices by the ATF between 2017 and 2021.