Springfield model 1873
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The Springfield Model 1873 was the first standard-issue breech-loading rifle adopted by the United States Army. The rifle, in both full-length and carbine versions, was widely used in subsequent battles against Native Americans. Wikipedia
Manufacturer: Springfield Armory
Year: 1873
Action: Trapdoor
Caliber: .45 in (11.43 mm)
Cartridge: 1873 Loading.45-70-405 (19,000 psi), 1884 loading 45-70-500 (25,000 psi))
Designed: 1872–1873
In service: 1873–1903