This early work was originally published in the early 20th century and we are now republishing it. 'Handbook of the Gatling Gun, Caliber .30 - Models of 1895, 1900, and 1903 - Metallic Carriage and Limber and Casemate Mount' is a manual that provides information on the construction and maintenance of a Gatling gun. This is and excellent publication for anyone interested in the technical aspects of weaponry.