The small pistol shown near the beginning of the film appears to be a Remington Model 95 Double Derringer, which indeed fired the .41 short cartridge. The original cost was eight dollars, and the company made 132,000 of them from 1866 to 1935, a remarkable 70 year production run for a firearm.
The stagecoach with the fancy scroll-work painting and large yellow rear wheel brake also appears in Tall Man Riding (1955).
This was Charles Bronson's fifth credited film role (as Charles Buchinsky).
Warner Bros.' last feature length film shot and intended for in 1.37:1 .
Many contemporary reviewers questioned if this film was supposed to be satire or a serious Western. Some critics consider this to be a thinly-veiled commentary on the anti-communist witch hunts and Hollywood blacklist of the time.