California Code, Civil Code - CIV § 3273.60

(a) “Digital firearm manufacturing code” means any digital instructions in the form of computer-aided design files, computer-aided manufacturing files, or other code or instructions stored and displayed in electronic format as a digital model that may be used to program a CNC milling machine, a three-dimensional printer, or a similar machine, to manufacture or produce any of the following:

(b) “Federally licensed firearms manufacturer” means a person, firm, corporation, or other entity that holds a valid license to manufacture firearms issued pursuant to Chapter 44 (commencing with Section 921) of Part I of Title 18 of the United States Code and regulations issued pursuant thereto.

(c) “Firearm” has the same meaning as in subdivisions (a) and (b) of Section 16520 of the Penal Code.

(d) “Three-dimensional printer” means a computer-aided manufacturing device capable of producing a three-dimensional object from a three-dimensional digital model through an additive manufacturing process that involves the layering of two-dimensional cross sections formed of a resin or similar material that are fused together to form a three-dimensional object.