The Last Days of Frank and Jesse JamesThe Last Days of Frank and Jesse James - Internet Movie Firearms Database - Guns in Movies, TV and Video GamesThe Last Days of Frank and Jesse James
In some scenes Frank James (Johnny Cash) is seen using a Remington 1858 New Army revolver. The real Frank James had used Remington revolvers since his service in the civil war. To quote Frank: "The Remington is the hardest and the surest shooting pistol made." Frank did carry a Remington New Model Army during his career, but he was better known to carry a Remington Model 1875 revolver chambered in .44-40 Winchester Center Fire.
Single Action Army
Single Action Army revolvers are used by the James' gang including Frank (Johnny Cash) and Jesse (Kris Kristofferson) themselves. None of them are genuine Colts. Frank's SAA in particular is either a copy by the Great Western Arms Company, or J.P. Sauer & Sohn (imported by Hawes) as revealed by looking at the hammer when he cocks it (see the caption in the fifth picture below for more information).
Colt Walker 1847
A showman offers people to shoot candles while holding a Colt Model 1847 Walker. This is likely a copy and it isn't exactly historically correct. It isn't anachronistic, but it isn't perfectly historically accurate either. In the real Old West very few people had ever even seen a Walker. The reason for this is that there were only 1,100 of them made during the Mexican-American War and 500 of them were lost when one of the ships delivering them to the army sank.
Winchester 1894
Winchester 1894 rifles are seen a few times in the film. This is anachronistic, as the film is set in 1877-1892, but this model (along with the Winchester Model 1892) was readily available from armorers because they were the most recent Old West rifle produced and were cheaper to get than the earlier models such as the Winchester Model 1866 "Yellowboy" and the Winchester Model 1873.
Single Barreled Shotgun
Many of the townspeople trying to fight the James gang fire at them with Single Barreled Shotguns.