Heckler & Koch HK 51
The G3 is a 7.62mm battle rifle developed in the 1950s by the German armament manufacturer Heckler & Koch GmbH (H&K) in collaboration with the Spanish state-owned design and development agency CETME (Centro de Estudios Técnicos de Materiales Especiales).
Read more about Heckler & Koch HK 51: History, Design Details, Variants, Users