Federal silencer definition would cover devices and their main housings

Federal law would define which devices and parts count as firearm silencers or mufflers. Covered parts are the outer tube or another single part that provides the main housing or structure for internal sound-reducing components. Devices must be designed or redesigned, made or remade, and intended for both sound reduction and firearm attachment. For a covered part, the internal components must be designed or redesigned, made or remade, and intended to reduce gunshot sound. Attachment may be direct or through a mount, adapter, or other device that is not itself a silencer or muffler.