FX-05 Xiuhcoatl – Wikipedia

The FX-05 Xiuhcoatl (“Fire Serpent”, literally “Turquoise-Serpent” in Classical Nahuatl, an Aztec mythological creature) is a Mexican assault rifle, designed and built by the Dirección General de Industria Militar del Ejército (General Directorate of Military Industry of the Army) through the Fabricas Militares (Military Factory).

: https://en.wikipedia.org/wiki/FX-05_Xiuhcoatl