Penal Code - PEN 18100. PART 6. CONTROL OF DEADLY WEAPONS [16000. - 34400.] TITLE 2. WEAPONS GENERALLY [17500. - 19405.] DIVISION 3.2. Gun Violence Restraining Orders [18100. - 18225.] CHAPTER 1. General [18100. - 18123.] (a) A gun violence restraining order is an order, in writing, signed by the court, prohibiting and enjoining a named person from having in his or her custody or control, owning, purchasing, possessing, or receiving any firearms or ammunition. This division establishes a civil restraining order process to accomplish that purpose. (b) For purposes of this chapter, the term “ammunition” includes a “magazine” as defined in Section 16890. Amended by Stats. 2018, Ch. 898, Sec. 3. (SB 1200) Effective January 1, 2019.