The Second Amendment was passed fifteen years after the American Revolution, in 1791, as part of the Bill of Rights. This was just three years after the Constitution was ratified in 1788. The complete Second Amendment of the United States Constitution reads:
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.
James Madison originally proposed the Second Amendment as a way to provide more power to state militias. It begins with the concept that states must have a strong militia to ensure their security: “A well regulated Militia, being necessary to the security of a free State…”. The Second Amendment concludes with the notion that people must have the right to bear arms as an extension of the state militia concept (e.g. “the people” who can be called upon for military service during a time of need).Read On