I was bored so, I dug around in my spare parts box and found a grip that wasn't quite as nice as all the rest.
Spent a few minutes measuring, looking at pictures, and comparing before I taped it off with masking tape and went after it with a Dremel. A few minutes with a cut off wheel, and a hack saw, and I had the basic shape knocked out. Another 45 minutes with a sanding drum and sanding blocks corrected my slight mistake, leveled it off well enough, and rounded the edges. Polished it up with some fine grit paper and some rubbing compound and mounted it to my 607.
Not bad for an unplanned afternoon project.
Close up.
Stock open.
With 30 round full curve mag.
It's a bit weird to hold, but not hard to get used to. Definitely an interesting look.
Now all I need is to have the barrel chopped (saving my pennies) and get proper hand guards and a rear cap.