Here's a picture of my Homebrew Scorpion 'Shadow'. It was allegedly tuned by 'Welham' before I bought it complete with scope and silencer, and I have to admit it's the smoothest Scorpions I've ever shot.
I cut down and sprayed a Buccaneer stock, which is why the fore end is a different shape, and reaches further forward than the normal Shadow stock, which is shown in the second picture.
Scorpion Shadow Homebrew
Scorpion Shadow