California Code, Health and Safety Code - HSC § 1567.91

(a) “Firearm” means a device, designed to be used as a weapon, from which is expelled through a barrel, a projectile by the force of an explosion or other form of combustion, including the frame or receiver of the device.

(b) “Ammunition” means one or more loaded cartridges consisting of a primed case, propellant, and with one or more projectiles. “Ammunition” does not include blanks.

(c) “Antique firearm” has the same meaning as set forth, and has the same meaning as, in Section 921(a)(16) of Title 18 of the United States Code.

(d) “Deadly weapon” means any of the following:

(e) “Facility” means a community care facility for adults licensed by the State Department of Social Services, Community Care Licensing Division, except for social rehabilitation facilities and adult day programs.