Got another possibility...
Could you either modify a firearm in a non permanent way, that you could convert back if you needed. Would that be allowed?
What about having one with the ability, but only putting in less then capacity? its not theoretically capable of putting out more then its loaded with at any one time
Instead...you could just put one in it...and carry all the ammunition with you...therefore, until you ever fill the gun up...isnt it, technically speaking legal?
An empty gun with the capacity to shoot more then five is surely less dangerous then one with the capacity of three...but its full??
I presume they are banning it because they say its dangerous...or do they claim something else as their reasoning?