Six Shootin' Sheriff(1938)

Cowboy star Ken Maynard is Jim "Trigger" Morton, in town undercover while pursuing the man who framed him for robbery. But a well-placed shot tames a band of scofflaws and gains Morton the sheriff's badge. Now, he's riding on both sides of the law. The line is further blurred when old buddy Chuck offers evidence of Morton's innocence in exchange for a blind eye to Chuck's impending postal heist in this classic Western.