Section 16740 Of Division 2. Definitions From California Penal Code >> Division 2. >> Title 1. >> Part 6.

. As used in this part, "large-capacity magazine" means any ammunition feeding device with the capacity to accept more than 10 rounds, but shall not be construed to include any of the following:
  (a) A feeding device that has been permanently altered so that it cannot accommodate more than 10 rounds.
  (b) A .22 caliber tube ammunition feeding device.
  (c) A tubular magazine that is contained in a lever-action firearm.