Wrong .... all of you who have not been visited by the ATF do not know jack, so please dont tell me that your magically going to say you sold them out of state. Because guess what, you need to keep records of all your transactions, even when i went to places like GFA arms, or gartman, or mikes back in the day, i got a bill of sale from every store. It proves you do not own the gun still. Just because everything you have ever purchased is on file, IE the serial numbers are what they show up with, they go through your paperwork and check off each serial number. Thankfully the atf guy did not care to see all the guns just wanted to see the paperwork. long story for another time.
So good luck saying oh i sold them all out of state. Your best option are 80% lowers, stick them in a pvc tube and into the ground. stick to that vs trying to lie to the atf agent and town police officer at your door in the morning while getting ready for work. If they take them, so what you have your off the books guns already stashed.