This legislation seeks to significantly limit the power of states and localities to regulate rifles and shotguns. It amends federal law to prevent these jurisdictions from imposing any regulation, prohibition, or registration or licensing requirement that is more restrictive than federal law. Specifically, states and political subdivisions are prohibited from enacting laws concerning the design, manufacture, sale, transfer, or possession of rifles or shotguns that exceed federal standards. This also applies to imposing penalties, taxes, fees, or charges greater than those under federal law, rendering any conflicting state or local law without force or effect. The term "rifle or shotgun" is broadly defined to include any part, detachable magazine, ammunition feeding device, and certain pistol grip or stock designs, and a prevailing plaintiff in an action for violation will be awarded reasonable attorney's fees.