The firearm used by Quigley (Selleck) is a custom 13.5 pound (6 kg), single-shot, 1874 Sharps Rifle, with a 34-inch (860 mm) barrel. The rifle used for filming was a replica manufactured for the film by the Shiloh Rifle Manufacturing Company of Big Timber, Montana. In 2002 Selleck donated the rifle, along with six other firearms from his other films, to the National Rifle Association, as part of the NRA's exhibit "Real Guns of Reel Heroes" at the National Firearms Museum in Fairfax, Virginia.