If your Waffen Werks is like mine, then it probably has a fixed stock. The folding skeleton stocks are not cheap, and they require you to change the rear trunion to mount them to the rifle. That means drilling rivets to get the old trunion out, and then riveting the new trunion in place, which isn't the easiest task to accomplish if your an amateur.
If you want the stock just for looks, I believe someone out there is selling a polymer non-folding version that is pretty cheap and should install with a couple a screws. If you want a folding stock, then there are simpler options available that wont require modifying the rifle.
"Si vis pacem, para bellum" - If you want peace, prepare for war.