Rigby5
Diamond Member
The meaning of "well regulated" means to be familiar, fully functional, ready to go, practiced, etc.
As in a "well regulated clock", or "regular bowel movements".
If that does not convince you, then look up the constitution giving the right for the feds to "regulate inter state commerce". Historically that came about in order to prevent states from interfering with commerce from other states, and did not at all imply the feds could then constrict interstate commerce in any way.