Section IV. -- The Right to Keep and Bear Arms.
The Constitution. -- By the Second Amendment to the Constitution it is declared that, "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."
The amendment, like most other provisions in the Constitution, has a history. It was adopted with some modification and enlargement from the English Bill of Rights of 1688, where it stood as a protest against arbitrary action of the overturned dynasty in disarming the people, and as a pledge of the new rulers that this tyrannical action should cease. The right declared was meant to be a strong moral check against the usurpation and arbitrary power of rulers, and as a necessary and efficient means of regaining rights when temporarily overturned by usurpation.
The Right is General. -- It may be supposed from the phraseology of this provision that the right to keep and bear arms was only guaranteed to the militia; but this would be an interpretation not warranted by the intent. The militia, as has been elsewhere explained, consists of those persons who, under the law, are liable to the performance of military duty, and are officered and enrolled for service when called upon. But the law may make provision for the enrolment of all who are fit to perform military duty, or of a small number only, or it may wholly omit to make any provision at all; and if the right were limited to those enrolled, the purpose of this guaranty might be defeated altogether by the action or neglect to act of the government it was meant to hold in check. The meaning of the provision undoubtedly is, that the people, from whom the militia must be taken, shall have the right to keep and bear arms, and they need no permission or regulation of law for the purpose. But this enables the government to have a well regulated militia; for to bear arms implies something more than the mere keeping; it implies the learning to handle and use them in a way that makes those who keep them ready for their efficient use; in other words, it implies the right to meet for voluntary discipline in arms, observing in doing so the laws of public order.
Standing Army. -- A further purpose of this amendment is, to preclude any necessity or reasonable excuse for keeping up a standing army. A standing army is condemned by the traditions and sentiments of the people, as being as dangerous to the liberties of the people as the general preparation of the people for the defence of their institutions with arms is preservative of them.
What Arms may be kept. -- The arms intended by the Constitution are such as are suitable for the general defence of the community against invasion or oppression, and the secret carrying of those suited merely to deadly individual encounters may be prohibited.
Sources on the Second Amendment and Rights to Keep and Bear Arms in State Constitutions