Oh, absolutely. As long as they are not a taught to read. That only makes them unhappy. 
In the US, they do. Apart from the horrendous school shootings, it’s not uncommon fort a very young child to get daddy’s gun and either shoot himself or another child stone dead.
Ah, addressing the argument that guns make you safe:
The president of the US is one of the most rigorously protected human beings on the planet. Yet within my life time one was shot (Reagan) and Kennedy shot and killed. Bobby Kennedy also had strong security and should also have been safe, but he was also killed
Australia has had strict gun laws since 1996. Since that time there have been no mass shootings and armed robbers almost never use guns. (too expensive on the black market). Probably just a coincidence.