1. Nobody can buy or sell or loan or borrow or otherwise possess a gun without a license
2. Nobody can obtain a license without passing a Federal criminal background check
3. Each and every sale, gifting, loan, inheritance or other transfer, must ensure that the recipient currently holds a valid license
4. Each and every sale, gifting, loan, inheritance or other transfer may only be made to recipients who have a State-approved training and safety education certificate particular to that class of weapon
5. Each and every sale, gifting, loan, inheritance or other transfer must ensure that the transaction is reported to the State
6. Each and every weapon must be registered with the State
7. Mandatory refresher training for each class of weapons owned, every 5 to 10 years
8. Mandatory license renewal once every 5 years
9. Revocation of license and training certificates and seizure of weapons upon conviction or plea-bargaining for domestic violence, assault and battery charges, hospitalization for mental health problems, etc., with a State -level appeals board to provide recourse for those who believe they have been wrongfully treated in this context
10. Crucifixion (metaphorical, legal) for those who violate related laws.
11. Mandatory and real-time exchange between Federal and State computer databases related to Licensing, Certifications, background checks, registrations, criminal convictions, etc.
12. Very few limits on the types of weapons and ammunition and quantities that may be bought or sold or possessed.
13. Financial compensation for those whose weapons are seized during the course of license and/or training certification or registration revocation actions.
...and whatever-the-hell-else that the American People think best, as we struggle to find a balance between Constitutionality and Safety in our present age.