; (B) by striking person other than any person licensed under this chapter and inserting other person ; and (C) by striking for that and inserting compatible with the ; and (3) in paragraph (2)(D), by striking licensed manufacturer, licensed importer, or licensed dealer and inserting transferor . 3. Clarification of definition of secure gun storage or safety device Section 921(a)(34)(C) of title 18, United States Code, is amended by inserting provided with, or incorporated into the design of, the device before the period. 4. Requirement that a gun seller have a compatible gun lock available for every firearm offered for sale (a) In general Section 922(z) of title 18, United States Code, is amended by adding at the end the following: (4) Requirement that a gun seller have a compatible gun lock available for every firearm offered for sale It shall be unlawful for any person to offer a firearm for sale unless the person offers for sale a secure gun storage or safety device that is compatible with the firearm. . (b) Penalties (1) In general Section 924(p) of such title is amended by adding at the end the following: (3) Penalties on others With respect to each violation of section 922(z)(4) by a person who is not a licensed importer, licensed manufacturer, or licensed dealer, the Attorney General may, after notice and opportunity for hearing, subject the violator to a civil penalty of not more than $1,000. . (2) Conforming amendments Section 924(p)(1) of such title is amended— (A) in the paragraph heading, by striking In general and inserting Penalties on licensed manufacturers, licensed importers, and licensed dealers