***requiring a background check for both, thus ending private sales.***
Now how does that work in the real world? You are in a hunting party and one member has a nice gun you like, he likes your gun. You trade or sell it to him on the spot. Who is going to take the time to go to some gun store and pay extra to make it “legal”? It IS your private property you are selling!
NO LOANING OF WEAPONS. Sounds like it’s not really your property any more doesn’t it?