Things I liked: Pretty unique desing. The FN FNC borrows from the AK, the Galil and the M16 designs and that to me is a pro. It's not an M4.
Things I would have changed: The integrity of the stock is pretty bad, I would have to replace the stock pin in the future, and the paint job could be better and darker since the real steel one is. The trademarks could be machined not just painted.
What others should know: The rate of fire is not the highest even with a 9.6v battery mine goes around 650 rmp which is close to the real thing. If you want to add a red dot you'll have to buy a G&G scope mount and they are hard to find, what I did was I bought a Stormwerkz scope mount and modded it to fit my FNC.