I very much agree, the number of guns per licence in and of itself is not a concern. That said, I still believe that it’s a valuable statistic to track.

Legally owned/originally acquired guns are the ones that contribute to the grey-market, obviously, and acknowledging that the supply for that market is likely to grow is important to bare in mind.

I absolutely agree with the last statement as well, greater restrictions around semi-automatic and faster firing weapons has had the greatest impact on safety, regardless of the increase in guns per person.