https://www.yahoo.com/news/federal-judge-blocks-key-parts-230504893.html
In California, state law requires new handguns to have three components: A chamber load indicator, which shows whether the gun is loaded; a magazine disconnect mechanism that will stop the gun from firing if the magazine is not properly inserted; and microstamping capability so law enforcement can more easily link spent shell casings to the guns they were fired from.
"No handgun available in the world has all three of these features,” the judge wrote. “These regulations are having a devastating impact on Californians’ ability to acquire and use new, state-of-the-art handguns.”