If you have seen the latest Journal there is an article about turning a standard frame OO into a clays gun. Part of this transformation was having a stock made from a blank that matched my sporting clays gun dimensions. The gun smiths a Victor's Legacy can do this. They would need to create a "blank" with your dimensions to put into the duplicator. The good news would be that they already have mine and could probably modify it to match your requirements. Just another option. He also has some very nice blanks to choose from.