“a [semiautomatic] handgun”
Unless you are using a pirate gun or you are Alex Baldwin, every modern handgun is “semi automatic.” You pull the trigger it fires. Then it loads another round—either through a movement of the cylinder or through the slide movement to the rear.
Actually, I think we have an “old Asian guy” problem in CA.
As I understand it, a revolver is not a “semiautomatic” firearm, but rather a “repeating” firearm.