Your carbine along with 999 other Burnside Spencers were paid for by the US government April 15,1965,were they went from there I can not tell you , some were sent to the army,most stayed in store until the 1870s then were sold of to large buyers of surplus military goods who in turn re-sold them on the surplus market,they turn up all over the world,Some were still being sold unused by the US government as lat as the 1890s(Banemans bought these and resold the to Sears ,who were advertising them around 1915 for $3.75 with 100 rounds of to suit,I have this add , but just can not lay my hands on it