I just put on of those stocks on my Krinkov.
It looks cool. I had to dremil down the hinge to fit the Bulgy Krink hinge. I also had to dremil down a little bit of plastic on the stock near the hinge so it would fold smoothly. My builder didn't center the scope rail so I had to also mill down the inside of the space on the stock for the scope rail to go into.
I don't have any pictures yet.
BISHOP