I saw one on Gunbroker for under $3000. Is that normal? That's about half of what I would think they cost. I thought the AC556 was one of the only $3000 and under F/A's around?
Not all FN FALs were FA. Most are semi-auto only, though quite a few variants were FA. This was probably a semi-auto variant.
It could also have been one of the G series guns.