This carbine was manufactured in 1863-1865 as a percussion carbine for use in the Civil War and was one of 31,098 carbines returned to Sharps for alteration and refurbishment for use with the then-new .50-70 cartridge in the late 1860s. It is one of around 27,000 that have relined, 3-groove barrels. The stock was replaced. Note the cut-out on the buttplate for a patch box and has "JR" carved in the left side. The carbine has the standard markings and features.