The Spencer repeating rifle was a 19th-century American lever-action firearm invented by Christopher Spencer. The Spencer carbine was a shorter and lighter version designed for the cavalry.
The Spencer was the world's first military metallic-cartridge repeating rifle, and over 200,000 examples were manufactured in the United States by the Spencer Repeating Rifle Co. and Burnside Rifle Co. between 1860 and 1869.
^Kea, R. A. “Firearms and Warfare on the Gold and Slave Coasts from the Sixteenth to the Nineteenth Centuries.” The Journal of African History, vol. 12, no. 2, 1971, pp. 185–213. JSTOR, http://www.jstor.org/stable/180879. Accessed 5 Sep. 2022
^Esposito, Gabriele, Armies of the War of the Pacific 1879–83: Osprey Publishing (2016)
^Cite error: The named reference Argentina was invoked but never defined (see the help page).
^Walter, John (2006). The Rifle Story. Greenhill Books. pp. 256, 70–71. ISBN978-1-85367-690-1. The fire-rate of the Spencer was usually reckoned as fourteen shots per minute. The Spencer rifle with a Blakeslee quickloader could easily fire twenty aimed shots a minute