it’s hard to measure one’s control especially in times where they seem calm enough what if they get under pressure and knowing they have a gun, they use it on someone? USA seems very lax in their regulations regarding gun laws they have department stores selling guns on the side where anyone can just go up to and buy a weapon for god knows what?
they should really reevaluate their laws considering the rates of mass shooting in the country
I think it pretty much depends on the state one lives there in the United States which determines how easy is for someone to get a gun or not. There are states where people are supposed to pass background check and also have a waiting period of a few days before being able to retrieve their new gun from the store. There are also States which can be very tight in the restrictions regarding the handling of the guns and whether can open carry or conceal carry a gun. As far as I understand, conceal carry implies additional permissions and additional processes for a citizen to keep a gun hidden in his clothing for be used at any time. In the north states is the case, while in Texas it is much more flexible so one does not need additional permission or training to get a gun and conceal it on oneself.
The problem when comes to pointing out who is supposed to have the rights to get a gun and who is not, is that people who get guns to commit violent crimes usually have no previous record for authorities to use as a precedent for them to get guns off that person, that is specially true for school shooters, most of them have a clean story and when deciding to get rifles, and they get them all legally. In practical terms, it can be very problematic when law is supposed to punish or restrict people from having guns if they have not committed a crime before. In the USA convicted felons are not allowed to hold guns, for example.