Wasn’t there something about putting them in a trust.
Gun trusts are mainly for National Firearms Act (full auto) firearms.
https://www.nolo.com/legal-encyclopedia/using-gun-trust-pass-firearms.html
It has the disadvantage that the serial number of the gun is recorded in public trust documents. You want your guns to be passed on to young people who will legally have ownership of them, but with that ownership not being recorded in any government database.