Assault weapons are not the weapons of choice among drug dealers, gang members or criminals in general. Assault weapons are used in about one-fifth of one percent (.20%) of all violent crimes and about one percent in gun crimes. It is estimated that from one to seven percent of all homicides are committed with assault weapons (rifles of any type are involved in three to four percent of all homicides). However a higher percentage are used in police homicides, roughly ten percent. (There has been no consistent trend in this rate from 1978 through 1996.) Between 1992 and 1996 less than 4% of mass murders, committed with guns, involved assault weapons.