The Ball Launcher is a type of bomb launching gun used in Unreal Tournament 2003 and UT2004 in the Bombing Run game type. When the player grabs the ball, the player weapon gets switched to the Ball Launcher. You cannot access any of your other weapons as long as you carry the ball, thus making you impossible to attack while you are the ball carrier.
You can use the Ball Launcher to throw or specifically pass the ball to other players or through the goals. The secondary fire assigns an ally bot to receive the ball pass from you, and the primary fire allows the bomb to be shot towards the assigned bot. You can shoot the ball towards the ally bot even without locking on him as the the ball target.