One of the groups prohibited from owning a gun is anyone "adjudicated as mental defectives or incompetents or those committed to any mental institution." I don't know anything about psychiatry, but I'm sure that falls into that category, so I'm going to say, no, not legally in the U.S.
No
In general, any felony makes you inelligible to own a handgun.
It depends on what the crime is that is on your record. If it is a felony, you can't legally own a handgun anywhere in the U.S.
If you have a handgun carry permit, definitely. The handgun carry permit covers "any handgun that you legally own or posses."
By federal law you may own or possess a handgun at age 18, but you cannot purchase handgun ammo or a handgun from a dealer until age 21.
To legally purchase or own a handgun, you must be 21.
By federal law you may own or possess a handgun at age 18, but you cannot purchase handgun ammo or a handgun from a dealer until age 21.
21
18 for a shotgun/hunting rifle, and 21 for a handgun.
No, she was not schizophrenic.
Generally speaking, no. You can't own a handgun if you have any felony. It is possible, under some circumstances, to have your gun rights restored.
There's no law that I can find specifying a requirement to have sights. Why you'd want a handgun without them is beyond me, but to each their own.