The U.S. Model 1855 Pistol Carbine
Adopted alongside the U.S. Model 1855 Rifle and Rifle-Musket, the Model 1855 Pistol Carbine mated a shoulder stock to a big-bore handgun. While soon rendered obsolete by better carbines, such as the Sharps, the M1855s saw service against the Apache and Cheyenne and in the American Civil War.