Video obtained by Channel 2 Action News shows that Henry dashed inside the store, jumped behind the counter, demanded money and fired shots at the clerk.
The clerk pulled out a silver revolver and fired back, hitting Henry at least three times.
Henry ran out of the store and was later found face down, unresponsive in a grassy area. He was taken to Grady Memorial Hospital with gunshot wounds to each arm and the left upper side. He died at the hospital.
The Lithonia resident had been implicated in at least nine robbery cases, Channel 2 reported.
According to online jail records, he had been arrested at age 17 for theft in 2011. He also had three warrants out for his arrest at the time of his death, Channel 2 reported.
We are learning more about the man who committed a violent armed robbery. The dozen other similar crimes cops say he committed @wsbtv 5pm pic.twitter.com/NrnEja3fKm