From the eBay link:

"Q: Hi, I'm just curious how you intend for the forend to stay together after the stock is inletted for the action/barrel. I see you have a strengthening rib (the only thing running lengthwise in the piece), but most of it will be removed when the barrel channel is cut...A: AHHHHH! I've been waiting for this question and thank you for getting to the "heart" of this piece. If you work with wood you will know that properly laminated (gluing and clamping) wood is stronger than wood by itself. The Fiddleback Maple strongback runs throughout (length & width) the lighter woods for stablization up until the darker woods. 99.99% of the stocks grain runs fore and aft to transfer the muzzel energy throughout the blank like a natural grain stock does, the glue lines between layers act as shock absorbers much in the same way a martial artist is able to break through multible slabs of concrete stone, the air spaces allow the "transfer" and ultimately the "absorbsion" of the energy. In addition the glue used replaces the air in the woods grain pores to create a "denser" stock. When you barrel this stock you will lose the top Fiddleback detail but it will continue in the underbelly and shoulder stock. A lot of thought went into this design and thank you for asking."