Not one, TWO commas. If the first comma indicates a well regulated militia may or may not be necessary to a free state.......then the second comma indicates the (people's or citizen's) right to keep and bear arms may or may not be necessary.<quoted text>"Us," being gun owners, and gun rights supporters. Of which I count myself one.(Well, one of each...)
That comma, following the word 'militia' in the 2nd amendment, indicates to some folks that the militia may or may NOT be necessary to a free state...and that the phrase 'The People', only refers in this case to a necessary standing militia having the un-infringe-able right to bear arms. Never says anywhere in the 2nd, who gets to decide the context of 'necessary', either; so those same folks assume it gets to be them.
I thoroughly disagree with THOSE folks.
You can't apply to different standards to the same thing.