Country of origin



Dirección General de Industria Militar del Ejército

Production began


Weapon type

Assault rifle


5.56 x 45 mm NATO


Gas operated, rotating bolt

Overall length

1087 mm stock extended; 887 stock folded


3.89 kg

Magazine/Cylinder capacity

30 round box

Cyclic rate

750 rpm

Maximum effective range

200-800 m

Muzzle velocity

920 m/s

The FX-05 Xiuhcoatl (FX-05 "Fire Snake", literally "Turquoise-Serpent" in Classical Nahuatl) 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). The rifle was officially presented in the military parade on September 16, 2006, in the hands of the Special Forces Airmobile Group, GAFE. (Grupo Aeromóvil de Fuerzas Especiales). The design was coordinated by the Centro de Investigación Aplicada y Desarrollo Tecnológico de la Industria Militar or CIADTIM (Center of Applied Research and Technology Development Military Industry) and SDN and all of its parts are built in Mexico. It is currently in use by the Mexican Army's Special Forces units and Airborne Infantry Brigade and is projected to completely replace the Heckler & Koch G3 in general service by 2018.

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