(NBC News) An Arizona man is dead following an accidental shooting at a Dolan Springs gun range.
Police say 39-year-old Charles Vacca was instructing a 9-year-old girl on how to shoot an automatic weapon when he was accidentally shot in the head.
Video taken just moments before the deadly accident may shine a light on what went wrong. After firing a single shot, the instructor set the weapon to fully automatic. According to the Mohave County Sheriff's Office the gun rotated backwards while still firing and shot Vacca.
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