Yes, the finger rest floor plates are available separately. Have no idea where to get them in France. However, I'll bet this guy in Germany has them: http://www.germanguns.de/exportindex.htm
does anyone know if you can buy a plastic finger rest to fit a standard mag. Or do you just buy a new mag with the rest fitted? I'm asking for a fella I shoot with.
We cant find them here in France, but you may know of some where on your side of the pond.