A conductor tube for use in a welding gun, and preferably a MIG welding gun, is provided that includes a plurality of flex joints. The flex joints include a body defining a proximal end portion and a distal end portion, a cap secured to the proximal end portion of the body, and an extension mounted within the distal end portion of the body, the extension being repositionable within the body. The body, the extension, and the cap are adapted for attachment to each other and to adjacent components of the welding gun. Additionally, a conductor tube for use in a welding gun includes a plurality of thermally and electrically conductive elements secured to each other and extending along a length of the conductor tube, wherein the elements are independently repositionable relative to each other.