This barrel and chamber is from a .36 caliber cap and ball Colt 1851 Navy Revolver. The Colt 1851 Navy Revolver, originally designed by Samuel Colt, could hold six rounds of bullets and was mass produced by Colt's Manufacturing Company from the early 1850s-early 1870s. The barrel and chamber remnants from this particular revolver were found in the late 1930s on the site of the Nez Perce War battle Lamáta/The Battle of White Bird Canyon, which took place on June 17, 1877. Since this Colt 1851 Navy Revolver was believed to be an Army issued revolver, it is very likely these barrel and chamber remnants are associated with a revolver used by a U.S. Army soldier during Lamáta/The Battle of White Bird Canyon. Though only the barrel and chamber remain from this Colt 1851 Navy Revolver, the original revolver would have been made of various materials, including steel, brass, silver, and wood.
Image 1: This photo is a closeup of the revolver's chamber, where the cartridge or round is inserted. One can see the how the weather elements have impacted the condition of the remaining barrel and chamber.
Image 2: This photo shows the revolver barrel and chamber from the Colt 1851 Navy Revolver in its entirety. Though the weather elements have discolored the barrel and chamber, it is still relatively intact.