This legislation, titled the Responsible Firearms Marketing Act , mandates the Federal Trade Commission (FTC) to undertake a comprehensive study concerning potentially unfair or deceptive acts and practices prevalent in the advertising and marketing of firearms. The study is specifically directed to consider advertising materials that may be designed to appeal to individuals under 18 years of age, imply or encourage illegal use of the product, or relate to the marketing of semi-automatic assault weapons. The FTC is required to submit a report on its findings to Congress within two years, including recommendations for legislative or administrative actions. Following the submission of this report, the bill further directs the FTC to promulgate regulations within 18 months to prohibit any manufacturer, dealer, or importer of firearms from engaging in such identified unfair or deceptive acts or practices. These regulations must address the specific concerns highlighted in the study, including advertising targeting minors, encouraging illegal use, or related to semi-automatic assault weapons. Violations of these regulations will be treated as violations of the Federal Trade Commission Act, granting the FTC full enforcement powers to ensure compliance and protect consumers from deceptive firearm marketing.