FBI: 77% of justifiable homicides involved a firearm
According to the FBI’s unified crime report, 77.3% of justifiable homicides, defined as the killing of a felon during the commission of a felony, committed by private citizens in 2011 involved firearms. That’s 201 involving a firearm out of 260 total justified homicides.
For justifiable homicides committed by law enforcement officers in 2011, the number is even higher. According to the same FBI unified crime report police used firearms in 99.2% of the justifiable homicides they were involved in, 390 of 393 to be exact.