It depends. A simple expungement does not qualify you to own a handgun. If have been charged with something that disqualifies you from owning a gun, you have to have your rights restored before you can legally buy one again.
No, he's a kid
18 for a shotgun/hunting rifle, and 21 for a handgun.
No, they cannot.
That depends on the expungement- they vary from state to state. You need to contact a Colorado attorney familiar with Colorado firearm laws to get an answer that is current and correct.
There is no "statute of limitations" on a convicted felons right to own or possess firearms. Unless the conviction is expunged it is prohibited - forever - under both state and federal law.
You may sell it to a dealer, have a dealer sell it for you, or you may sell it directly to another resident of Arkansas so long as they are old enough to buy a handgun, and you do not have reason to believe the buyer is not able to legally own a gun. If the gun is being sold to someone in another state, the gun must be sent TO a gun dealer in that state.
73% of adults.
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.
In general, yes. There are a few people that cannot legally own a gun, such as a felon, people with certain misdemeanors, and people with mental deficiencies and, a couple of others.
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.