"A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed."
This means that you have a right to own a weapon and use it for self defense,under certain gun control laws.like the government can not band firearms ,only certain places like banks and schools and airports.
It was made so that way the people in the cities could protect them selves if any thing would happen they would have it handy.such as if someone threatened them or if someone broke into their house.
District of Colombia vs Heller:in a 5-4 decision the us voted to make a law that
this photos show that we have the right to buy a fire arm and use it.It means nothing can stop you from owning a gun as long as your legal