Abstract: The present invention provides a caulking gun comprising a cartridge holder comprising an elongate body portion for receiving a tubular cartridge of fill material, said elongate body portion comprising at least one magnetic portion, a handle grip comprising controls for operating a plunger and a piston which pushes on a bottom end of the cartridge to expel a bead of the fill material out from the tip of a nozzle on a top end of the cartridge and wherein the caulking gun is removeably attachable to a suitable support via the at least one magnetic portion.