Motion in California 1st Amendment case
It's a motion for preliminary injunction, i.e., to enjoin enforcement of the statute until trial or dispositive motions terminate the case. The statute in question forbids firearms dealers to display firearms, or advertising, any place where they are visible from outside the store. It thus forbids truthful and non-misleading commercial expression, and does so inside the person's own premises.
As I recall, that prohibition is in the Uniform Firearms Act of the 1920s and 1930s. The UFA was meant to head off laws like the Sullivan Act and this (and the requirement that firearms sold be "securely wrapped" before leaving the store) were probably meant as concessions to the antigunners. "At least you'll never have to see them."