CETME Model L
The CETME Model L is a Spanish 5.56×45mm NATO assault rifle developed in the late 1970s at the state-owned small arms research and development establishment CETME (Centro de Estudios Técnicos de Materiales Especiales) located in Madrid.At NATO joint exercises, foreign units tended to be warned not to use Spanish ammo if their rifles were gas operated[citation needed].It was a common sight in NATO joint exercises to see Spanish soldiers searching the zone where US troops discarded their empty mags.The CETME Model L is equipped with adjustable iron sights consisting of a forward post (corrected mechanically for elevation) in two versions "thick" and "thin" (no official designation).The Model LV (Visor) is a marksman variant equipped with a fixed STANAG mount over the rear sight base; the optic generally used in this role is a nationally produced 4 power ENOSA scope.Another model with a rotating drum rear sight used by the Infanteria de Marina was also called LV, leading to some confusion, even in training manual and logistics.[2] Another variant of the Model L is found in the United States; as a fully automatic firearm, it cannot be imported as a machine gun for civilian sale.