Don't own one, but have handled a few. It is the same action as the new FN produced 70's with a different, less expensive stock. I own 2 Classics, and 1 of the new FN produced guns. The trigger is different on the FN guns, but everything else is the same. They have very smooth actions that feed well and all reports are of extremely good accuracy. Mine in 308 shoots well under 1" and often closer to 1/2 groups.
The Ultimate Shadow stock is a typical injection molded stock with some grippy inserts in the pistol grip and forend for a better grip. I have no idea how they shoot in this stock, but I've never had any problems with good shooting from many of these cheap stocks.