text of the 2nd Amendment. “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.”
"Gun enthusiasts and gun lobbyists love to cite the 2nd amendment to the constitution as the catch-all defense to their right to carry any weapon that they can get their hands on (ex. assault rifles). In order to do this, these gun owners/sellers have hopelessly perverted the original intent of the 2nd Amendment and have expanded its guarantee of the right to “keep and bear arms” far beyond its original bounds.
From its passage and until the late 20th century, the 2nd Amendment to the constitution was interpreted to protect the rights of states to maintain militias and for militiamen to sustain arsenals. In the early years of our country, there was no standing federal army (the founders were afraid of a national standing army consolidating power) and the states were expected to sustain a state militia in order to contribute to the national defense; this expectation necessitated protections for militias that would facilitate militiamen keeping weapons for their service." (theprogressivecynic.com)