Section 16250 Of Division 2. Definitions From California Penal Code >> Division 2. >> Title 1. >> Part 6.

. (a) As used in this part, "BB device" means any instrument that expels a projectile, such as a BB or a pellet, through the force of air pressure, gas pressure, or spring action, or any spot marker gun.
  (b) This section shall be operative on January 1, 2016.