Many in this forum make much of sticking to the Constituion. That worthy document addresses the question of "What is a Militia", and therefore what militia is addressed in the 2nd Amendment.  "What is a militia" is defined in the constitution.  All other materials should defer to that definition, shouldn't they?

Article 1, Section 8 gives Congress the power to "provide for organizing, arming, and disciplining, the Militia, and for governing such Part of them as may be employed in the service of the United States", while "reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress;"

Article 2, Section 2 places the militia under the command of the President of the United States.

The founders clearly intended for Congress to organize, arm and "discipline" the militia, and gave states the right and obligation to train the militia and name its officers. This is not an armed band awaiting the call to duty, and it is clearly intended to be under the control of either the Congress or representatives of the respective states from which the militia is drawn. The intent is clearly for the militia to be trained by the states and when called up to be under the command of the President.

The right to keep and bear arms looks like a collective right given to the states, not to me and thee individually.