The present invention is a mounting bracket used to attach a compressed gas system to a lower side surface of a paintball gun. The mounting bracket positions the compressed gas system in relation to the paintball gun such that it lowers the vertical profile of the paintball gun system and shortens its overall length with respect to the user's body, and prevents the compressed gas system from obstructing the user's arm when grasping the paintball gun. The mounting bracket positions the tank such that a considerable portion of the paintball gun system's weight is borne by the user's shoulder, and makes the paintball gun system easier to stabilize while in motion or at rest.