The ownership rates of concealed firearms (pistols), automatic firearms, and assault rifles, have been directly linked to increased gun related homicides in 1st world countries.
Statistics don't lie. Simply look and the relationship between ownership of these weapons and the related homicide rates in Canada, the United Kingdom, and Australia.
These type of weapons are not needed for self protection and militia formation in our modern world.
Lets save the 10000 lives per year in needless homicide deaths and the pain and suffering and costs incurred by the many people injured by these types of firearms by removing them from the United States through a buy back program (rebate on your taxes).