This (pages 2 and 3) would make an interesting starting point for an alternate history:
As Joyce Malcolm has extensively documented, the English perception of an individual right to arms arose out of a 17th century reversal of policy course. Prior to the Stuart dynasty, English governments actively forced their subjects to own and use arms. All healthy male subjects were required to own arms appropriate to the time and their wealth, towns were required to construct shooting ranges, and all games other than marksmanship were outlawed in order to ensure that Englishmen would have but one legal sport.
Imagine if that were the case in the United States. No football, basketball, or baseball. Just hundreds of games involving shooting.
It would be totally unconstitutional (freedom of association would probably nix the idea) but it could make an interesting story.
Via Dave Hardy.