The model LV/ S was especially prepared by C.E.T.M.E. ("Centro de Estudios Técnicos de Materiales Especiales") for the elite Spanish Marines Special Forces Group "Unidad de Operaciones Especiales".
This design paired the CETME L with the L12A1 SUSAT (Sight Unit Small Arms Trilux) 4X scope, to provide faster target acquisition, sighting, and greater accuracy at longer ranges.