The man died at a bar in the Queensland city of Brisbane while filming the video for Bliss n Eso.
During the scene, several actors fired their guns and the actor somehow received wounds to his chest, Queensland police detective Inspector Tom Armitt said. No-one else was injured.
It is not immediately clear whether the guns were
loaded with live ammunition or blanks, Mr Armitt said. Blank cartridges can still cause injuries if fired at close range.
"I can't tell you whether they are live or real firearms," Mr Armitt told reporters. "I can't tell you the type of ammunition that were being used. That will be a subject of the investigation."
Police did not release the actor's name.