Definition and division of American weapon grades

American citizens or immigrant visa/green card holders can buy guns.

Non-immigrant visa holders (students, businesses, jobs, etc.). ) You can buy long guns in their state for more than 3 months, but they need a hunting license and SSN.

You can't buy a gun;

People who have committed serious crimes or certain misdemeanors, fugitives, illegal drug addicts, people suffering from certain mental diseases, illegal immigrants, people who have given up American citizenship, soldiers who have been discharged from the army, minors, and people who are restricted by personal restraining orders commit domestic violence.

In addition, persons who are under criminal investigation and face imprisonment for more than one year shall not accept, transport or consign firearms and ammunition.

2 1 year-old can buy pistols.

18 years old can buy long guns (rifles and shotguns).

Private individuals can't buy and sell across the state, they must go through licensed sellers.

Individuals can order guns online, but they must buy them from licensed sellers in the state.

Extended data:

Private ownership of guns is a right guaranteed by the US Constitution, not a privilege. Residents of every state can buy guns, but each state has different restrictions on the possession and use of all kinds of guns: whether to buy pistols, whether to register guns, whether to apply for gun purchase licenses, and whether to issue concealed gun licenses.

According to the Gun Holder Protection Act passed by the United States 1986, American civilians are prohibited from owning any machine guns newly produced after 1986.

Refer to Baidu Encyclopedia-American Gun Law