Steve Norris (Charles Starrett) has moved to a new frontier town and is making a good living as a cattle rancher.  The sheriff (Ethan Laidlaw) takes a dislike to Steve and even accuses him of being a cattle rustler.  Steve is so angered that he plays right into the hands of Decker (Hugh Prosser), a corrupt businessman who secretly puts blanks into Steve’s gun and then tricks Steve into thinking that he has shot and killed the sheriff.

Decker appoints Steve as the new sheriff but demands that Steve do exactly what Decker orders him to do.  If Steve actually enforced the law, Decker will turn him in as the first sheriff’s murderer.  Steve may not be able to do anything about Decker’s crimes but his alter ego, The Durango Kid, can!  As always, working with Steve is his loyal sidekick, Smiley Burnette.

The stand-out set piece of this Durango Kid film is an exciting stagecoach chase, which features the Durango Kid (in the form of legendary stuntman Jock Mahoney) making some thrilling moves.  The scene was so exciting and popular that it was used in a dozen other Durango Kid films.  These movies were never shy about reusing good scenes, effective stunts, and plot twists.  (It’s easy to lose track of how many times Steve has been appointed as sheriff of a town.)  This was also neither the first nor the last time that Hugh Prosser and Robert Wilke would play bad guys in a Durango Kid movie.  However, this is the only Durango Kid film to feature the Rodeo Rangers providing musical accompaniment  to Smiley Burnette’s songs.

Six-Gun Law will be best appreciated by fans of the western genre.  Charles Starrett is as tough and authentic a cowboy as always and the storyline has some nice twists and turns.  For once, with Steve being blackmailed by Decker, it makes sense that Steve would put on his disguise and solve his problems as the Durango Kid.