Penal Code § 30315
ARTICLE 2. Other Restrictions Relating to Ammunition
Any person, firm, or corporation who, within this state knowingly possesses any handgun ammunition designed primarily to penetrate metal or armor is guilty of a public offense and upon conviction thereof shall be punished by imprisonment pursuant to subdivision (h) of Section 1170, or in the county jail for a term not to exceed one year, or by a fine not to exceed five thousand dollars ($5,000), or by both that fine and imprisonment.