This is false as many of the biggest shootings have been with handguns.  The vt shooter used 10 round mags and pistols for example. Further, handguns are used in almost 100% of homicides.  Rifles of all types are used to kill fewer people annually than shod feet.  Banning inanimate objects in response to behavior problems from an exceedingly small number of people doesn't seem particularly effective or logical.