This looks like Uruguayan. Not Brazilian because it lacks the crest and siderail markings. Spanish and Uruguayan originally had a different stock cartouche. Spanish had the follower replaced with one that stops the bolt from closing on an empty magazine. Spanish also had the sight slider replaced with one of Spanish design. Then there are those few brought back from Afghanistan but they had fake dates added to the receiver ring.
My Brazilian is made by Loewe but the FN rifles were part of that same contract; the crest and Brazilian top line of the siderail marking were the same as on the Loewe rifles.