I suggest that you tighten up your requirements a little.
The People's Republik of Kalifornia has over sixty-eight pages of guns laws. It's a gun crime to have a pistol grip on otherwise legal rifles. It's a gun crime to purchase a handgun which has not been approved by the state as being "not unsafe". It's a gun crime to supply your sister with a firearm without having the transfer approved by the state. SIXTY-EIGHT PAGES of this nonsense.
No requirements are tight enough for a state that has gone past the line of utter insanity at Mach 5, I’m afraid.