FN FAL.
The Fusil Automatique Léger ("Light Automatic Rifle") or FAL is a self-loading, selective fire battle rifle produced by the Belgian armaments manufacturer Fabrique Nationale de Herstal (FN). During the Cold War it was adopted by many North Atlantic Treaty Organization (NATO) countries, with the notable exception of the United States. It is one of the most widely used rifles in history, having been used by over 90 countries.
The FAL was predominantly chambered for the 7.62x51mm NATO round, and because of its prevalence and widespread use among the armed forces of many NATO countries during the Cold War it was nicknamed "The right arm of the Free World".