You are correct. If some wacko chose to kill your daughter, he could do so with any number of weapons. However, there is one unique thing about assault rifles. If one wacko chooses to kill another wacko with a knife, axe, or chainsaw, your daughter is not in danger. If a wacko chooses to kill another wacko with an assault rifle and your daughter happens to be within a mile radius, her life IS in danger. That is also the case with the argument about the relative killing efficacy of hunting cartridges vs. assault cartridges. The target of a shooting, be it with a pistol, assault rifle, hunting rifle, or what-have-you, will probably die. Only in the case of an assault rifle, however, will the lives of everyone else in the radius also be in danger.