This proposal calls for the drafting of an ordinance to go beyond existing California law to define “’ghost guns,’ precursor parts for such guns and unserialized parts and guns,” ban the possession of unserialized parts for building firearms, prohibit making unserialized firearms or precursor parts specifically by 3D printing, and impose one-size-fits-all requirements for firearm storage.
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Am I reading this right? They want a serial number on each and every item in your parts kit?
It's going to be hard engraving or stamping a number on those detents and springs.