So what do you think it protects. In your own words would be preferable to those of the Brady Bunch.
I have come to believe that it protects the formation of a state Militia from federal infringement. It does this by protecting the right of individuals to keep and bear arms as part of a Militia.
Those arms are defined by the state in which they reside, and the state sets the laws governing those arms under the state constitution.
Any individual right to keep and bear arms beyond that is protected by each state's constitution.
Now, what do you think it protects and how do you explain the discrepancy in state gun laws (e.g., concealed carry)?