Vint Bonner helps Danny Barnes learn to shoot a rifle so that he can join his father and other men on a hunt for a cattle-killing mountain lion.; Vint Bonner visits an old friend, Tom Temple, who has taken a job as a guard on a freight company. When his gun jams during a stage hold-up, Temple is suspected of being part of the gang and Bonner has to help prove his innocence.; Facts about guns designed to be used for dual purposes, like Vint Bonner's pistol that converts into a rifle.