Chicago police said the victim was walking on Chicago's North Side when someone shot him with a paintball gun on Sunday night.
Chicago police announced six arrests Friday evening for the latest in an explosion of paintball attacks and shootings around the city.
The attack is the latest in a series of paintball shootings reported recently across Chicago.
Chicago police are investigating at least three recent paintball attacks on pedestrians.
Paintball attacks on pedestrians in Chicago have sent several people to the hospital with serious eye injuries.
A mail carrier was shot at with paintballs while delivering mail just blocks away from where another worker was shot and injured from a real gun the day before.