I was thinking about this. Many of the antis are trying to get the 2A re-interpreted so that the word "people" refers to a collective. Wouldn't it be easier to just limit the definition of the word "arm" to the following?
arm (n) - a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb
That way, they could still get what they want without any seeming violations of that pesky Constitution.
Just a thought, but then you might have to further ammend the Constitution to reflect the right to keep and bear legs and other common appendages as well.
Mel

