'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.'
Either they're just using a buzzword (militia!) or they actually mean something with that.
The right to a well regulated Militia AND the right of the people to keep and bear Arms.
"A free people ought not only to be armed, but disciplined..."
- George Washington, First Annual Address, to both House of Congress, January 8, 1790
"No free man shall ever be debarred the use of arms."
- Thomas Jefferson, Virginia Constitution, Draft 1, 1776
"I prefer dangerous freedom over peaceful slavery."
- Thomas Jefferson, letter to James Madison, January 30, 1787
"What country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance. Let them take arms."
- Thomas Jefferson, letter to James Madison, December 20, 1787
"The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man."
- Thomas Jefferson,
Commonplace Book (quoting 18th century criminologist Cesare Beccaria), 1774-1776