Total death and injury are about 125,000 a year. Deaths about 30K, two thirds of which are suicide, the vast majority by middle-aged white male gun owners (which no realistic gun control could impact). Of the 9K or so firearm homicides, about 80% per the CDC and FBI are criminals killing criminals, usually involving gang affiliation, the majority of the rest involve domestic disputes involving ongoing, escalating violence. Accidental deaths are about 600 per year. Of the injuries, the CDC doesn't track by severity, so a critical injury counts the same as a minor wound, but there too the majority involve criminals assaulting criminals. 

The US does not have a "gun problem," the US has a sub-culture of violence problem, mostly located in a few urban areas, within those areas mostly between very small groups of criminals and their associates known to police. Control for that and the US "gun violence" problem becomes barely distinguishable from the cherry-picked "developed world."