Manufactured by A.H. Waters Armory circa 1859 to early 1860s with a total quantity around 1,500 U.S. plus 3,000 Russian contract (writer believes this to be of the latter contract). It has the distinction of being the first bolt action rifle purchased by the U.S. government (900 were bought). Although the bore appears smooth, it actually has a type of rifling invented by Charles Lancaster, a London Gunmaker. Marked "GREENE'S PATENT/NOV. 17 1857." on the upper tang. Bayonet lug/blade front sight, stepped rear sight is graduated 5 through 8 on the folding leaf, three barrel bands, cleaning rod and buttplate with trapdoor for cleaning brush aperture, (not included).