RJ Gatling first patented his "Improved Battery Gun" on May 9, 1865 and subsequently in February 1871 and April 1872.
After the American Civil War, Russian General Gorlov visited the U.S. and arranged to produce these guns under license in Russia. Known as "Gorlov guns" they were used by the Russians from the 1870s through the Russo-Japanese War.
The gun we've modeled is the 1871 (and later) version, distinguished by the swivel mount between the carriage and the gun. This little gem is a model in its own right, made in seven pieces to an exact 1/64 scale. Everyone needs a battery of these!