Apparently you get something called " Harpuis or bedding " thats a poxy type gel that you pour into the cavity in the stock. You then cover the action and all in glad wrap, and press it into place. Let it dry and remove barreled action from the stock. It should now fit snugly into place. This means that you can use a router with a square bit. Well thats what ive heard. Any pros out there. Can this work. Heres a pic or two.