An Unparalled Guide To The World's Most IMPORTANT -- Rifles And Machine Guns, From The Medieval Period To The Present Day. This encyclopedia is an authoritative reference work with two stunning directories. It explains the development of rifles and machine guns through the centuries, and shows the capabilities and individual specifications of modern weapons. Also featured is a chronological account of arms development. A comprehensive list of manufacturers, a glossary and an index complete this easy-to-use encyclopedia.