Protecting the Second Amendment through Responsible Gun Ownership Act

HR 3155, the "Protecting the Second Amendment through Responsible Gun Ownership Act," prohibits the sale of defined "semiautomatic assault weapons" to individuals under 25 years old. The bill amends federal law to ban sales of these weapons (including specific rifles, pistols, and shotguns with features like detachable magazines, folding stocks, or specific model types) to anyone under 25, and makes it unlawful for under-25s to purchase them. It directly affects gun sellers, buyers under 25, and the sale of firearms meeting the bill's detailed definition. The key mechanism is a new federal prohibition on transactions involving these weapons with individuals under 25, expanding existing restrictions on juvenile firearm sales. This is a substantive policy change targeting specific firearm types, not a procedural measure.