I bought a used Remington 700 with the molded black stock for my next custom build. My new barrel will be a different profile than the factory barrel. Can I cut on the factory stock to make it fit or is the thing hollow or filled with foam. I'll probably replace the stock with something more suitable to the rifle in the future but right now, money is not there for a new stock so I need to make this work if I can. PS Planning on a Krieger Barrel.