Then please present your list of confiscated arms.   I know when Australia tightened restriction, they offered to pay for arms that were turned it, that got some response but I doubt anybody in that nation started with an accurate count of weapons that were already sold  in private ownership.  I am not particularly in favor of universal background checks.  Mental illness can happen overnight and does move to crisis just that fast, it won't be caught by background checks.

I'm for responsible oenrtship with full registration and a searchable database.   It is the ONLY way to convince gun owners that they will be held responsible for the use of their weapon.   If they chose to sell their weapon to another person, the transaction is recorded, just like cars.   If the gun is later found in commision of a crime, police can follow the links of ownship in seconds and have a decent chance of catching the criminal.    It Protects the gun owner, not inhibits them.