The rock inflicted more injury than the gun, but the gun ended the confrontation.Oliveira and the four other suspects confronted him and one of them tossed a "large rock" through his driver's window, striking him in the head, authorities said.
The victim, a concealed handgun license holder, then started shooting at the suspects. Police don't believe he struck any of them, but Oliveira surrendered to him at the scene. The victim held him at gunpoint until police arrived, officials said.
The captured one is in jail on $75K bond for assault with a deadly weapon. Police found two more, and are looking for the other rock-throwers.