This video was uploaded today (June 11, 2012) after Free Syrian Army’s fighters took an Air Defense Unit base near Homs. Two FN FAL can be seen. They look like Belgian 50.00 FN FAL, though it is hard to be sure without having a closer look at factory marking and receiver type. The black stock and pistol grip are interesting elements though.
Here is another video, this time from Idlib, North Syria, with more FN FAL. They look like Belgian 50.00 FN FAL as well.