California gun laws define a firearm as any device designed to be used
as a weapon, from which a projectile is discharged or expelled through
a barrel by the force of an explosion or other form of combustion. (California
Penal Code Section 12001). Under California law, a firearm does not need
to be in working order if it was designed to shoot and appears capable
of shooting. A firearm does not need to be loaded. Examples of firearms
include pistols, handguns, revolvers, rifles, and shotguns.