I just saw this on another forum and copied it for you. Hope it might give you an idea on how you may be able to shorten the stock.
"...The SBE only comes in one length (14.25") the stock can be cut down by a gunsmith. The stock is hollow and requires a wood block to be contoured to fit inside the bottom of the stock and glued in place to give the bottom recoil pad screw something to bite into. You will also have to put an aftermarket pad on it because once it is shortened the stock pad will no longer fit..."
