Patent 7121272 was granted and assigned to Smart Parts on October, 2006 by the United States Patent and Trademark Office.
A paintball gun preferably includes a compressed gas storage chamber, a bolt, and a firing valve all arranged in a longitudinal chamber of the paintball gun. The bolt preferably includes a first and a second surface area. One of the two bolt surface areas is preferably larger than the other bolt surface area. The bolt can be operated by supplying compressed gas of the a selected pressure to one bolt surface area and selectively supplying compressed gas of the selected pressure to the larger of the two bolt surface areas. A firing valve can also be operated by supplying compressed gas of the selected pressure to differentially-sized surface areas of the firing valve.