When asked to comment on David Carradine's actual martial arts skills, Chuck Norris opined, "David Carradine is every bit as good a martial artist as I am an actor."
There were no stunt doubles used for the final fight between McQuade and Wilkes. Chuck Norris and David Carradine insisted to do the scene themselves despite the protests of the producers, but director Steve Carver insisted, as well.
According to the producers, had Bruce Lee been alive at the time, he would have been offered the part that eventually went to David Carradine. Had Lee taken the part, the producers would have billed the film as "the rematch of the century".
In a panoramic shot of El Paso at around 11 mins 54 sec, there is a small traffic accident as a blue car runs into the back of a white truck.
The film was originally given an "R" rating in the US, due to it's violence and two uses of the word "fuck". Chuck Norris told the ratings board that the film was a story where good defeats evil and therefore should be suitable for a "PG" rating. The ratings board agreed and the film's rating was changed to "PG".