US Patent 7975683 Spring action paintball marker

A paintball marker using a piston and compression spring mounted in an air focus tube for generating compressed air for launching a paintball down a barrel. A trigger and sear are used to catch the compression spring when it is compressed to control the launching of the paintball. Exterior pull handles mounted behind the marker, and slideably mounted on the barrel are described for compressing the spring. Also, a pivotally mounted barrel is provided as another embodiment for compressing the spring.