A nine-year-old girl in Arizona has accidentally shot and killed her shooting instructor with an Uzi sub-machine gun.

AN Arizona shooting instructor was accidentally shot and killed while showing a nine-year-old girl how to use an automatic Uzi, authorities said.

Charles Vacca, 39, of Lake Havasu City, Arizona, died on Monday shortly after being airlifted to University Medical Center in Las Vegas, Mohave County sheriff’s officials said.

Vacca was standing next to the girl at the Last Stop outdoor shooting range in White Hills when she pulled the trigger and the recoil sent the gun over her head, investigators said.

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Authorities said the girl was at the shooting range with her parents. Her name has not been released.

The girl’s parents were using cell phones to film the tutorial when tragedy struck around 10am on Monday, Sam Scarmardo, the manager at the Arizona Last Stop gun range, told the Daily News.

Vacca spent about 18 months as an instructor at the White Hills range, which sits near the Nevada border on the western edge of the state.

Only certain ages are allowed to shoot at the range, but “the young lady fit within that limit,” Scarmardo said.

In operation for nearly 13 years, the range, which allows shooters to fire machine guns and high-powered weapons like a Barrett .50-caliber rifle, has never had somebody accidentally shot, “never had a scratch on anybody,” he said.

Ronald Scott, a Phoenix-based firearms safety expert, said most shooting ranges have an age limit and strict safety rules when teaching children to shoot. He said instructors usually have their hands on guns when children are firing high-powered weapons.

The official cause and manner of Vacca’s death are pending an autopsy Tuesday, the Clark County Medical Examiner’s Office of Nevada said.