From MRC today:
"We are making our XWR stocks in house and no longer using B&C stocks. They no longer have a cheek piece and are made with carbon fiber and Kevlar with a matte black finish with grey spider webbing."

Good to know they will no longer have a B&C 2x4 attached. Actually I think the B&C are a good stock, the wrist is just way to thick for my liking.