Lots of fear in this article
This article states "Ghost guns are unserialized, privately made firearms often produced with a 3D printer."
While it has been demonstrated it is academically possible to create a functioning firearm with a 3D printer, they are not safe nor reliable to use with the smallest of rounds and lightest of chamber pressures. Someone with a 3D printer isn't going to suddenly become a firearms manufacturer. A machinist with a high-end CNC machine, however, is a different from 3D printing. Even an old-school non-computerized machinist could produce the parts required with some time & skill.
- Requiring gun components like frames and receivers to be stamped with a serial number
- Requiring gun dealers to add serial numbers to 3D printed gun parts once taken into inventory
- Requiring gun retailers to retain sale records for the entire time they're licensed to sell firearms,
These laws are already in place. No gun dealer or manufacturer is going to touch guns without serial numbers. That will get them a visit to Club Fed for an extended stay.
Requiring a background check before selling someone parts necessary to make a gun
That is the real issue here. 80% lowers are partially finished receivers that a person can complete on their own by finishing the machine work. Unfinished they are just a hunk of metal. At what point does that hunk of metal become a firearm and require a serial number?
Look it up, here is a 20% finished lower receiver for an AR-15. Should this require a serial number? https://www.80percentarms.com/products/20-lower-blank-ar-15-lower-receiver-forging/
How about a 0% finished lower? https://www.80percentarms.com/products/0-billet-ar-15-lower-receiver/