Our options are further complicated by the union of these scales. On one extreme no private citizen can own any guns (AA, which is functionally equivalent to AR), while at the other extreme, every private citizen can own any gun, with no restrictions (NA+NR). But once we leave those extremes, which few people hold, the options are defined by a pair of coordinates along these distinct scales. While most people embrace positions on the "same" end of both scales, others embrace more exotic mixtures: some will want few weapons available to private citizens, but virtually no restrictions on those guns that are available (MA+NR), while others may prefer making most guns available, but want to seriously restrict them (NA+MR).
So our choice is not merely to support or oppose gun control, but to decide who can own which guns, under what conditions. Although I cannot pretend to provide a definitive account here, I can isolate the central issues and offer the broad outline of an appropriate solution. To simplify discussion, I