No more ghost guns. If you, like myself, have been wanting to finish an 80% receiver, you'll be affected directly, along with thousands of other law abiding citizens. Of course, this does nothing to stop mass shootings or gun violence. When was the last time a "ghost gun" was used in a mass shooting? They haven't been. Instead, this rule will ONLY affect law abiding citizens who are hobbyists and like the DIY approach.
I’d say that ghost cars may have hurt people; especially those who bought the parts and then, even with the help of a nagging spouse, never finished assembly, leaving parts all over the garage.