That said, I do think it is a difficult issue.
As far as I am concerned the right to the means of effective self defence within common sense limits is one of natural law. It is something so fundamental that arguments based in social utility can have only limited weight. The same does not ring true for suppressors, for me.
Suppressor laws are like speed limits, they might not be popular, but arguments in favour of them have some strength. That said, not sure what I think the right approach - certainly think it is a worthwhile debate though.