Gov. Gavin Newsom signed Assembly Bill 1127 on Oct. 10, expanding California’s machine gun definition to cover semiautomatic pistols with cruciform trigger bars that can be readily converted with a backplate “switch.” The NRA, Firearms Policy Coalition, Second Amendment Foundation, Poway Weapons & Gear, and two NRA members filed the federal case Jaymes v. Bonta, arguing the sales ban violates Supreme Court precedent protecting arms in common use. The statute targets dealer transactions only, leaves possession legal, exempts law enforcement, and allows private-party sales under existing rules, according to coverage and the bill’s summary. Retailers report a run on Glock-style models following the bill’s signing, with some stores saying they sold out as buyers sought affected handguns before the dealer-sales restrictions take effect. Outlets report differing start dates for the dealer-sales ban in 2026, while ATF data cited in reports show a 570% rise in seized conversion devices from 2017 to 2021.