Thumbhole Stock Set fits Orig Contender – Shade Varies. Coffee Laminate Thumbhole Buttstock and Forend Set. Custom designed for the Original Thompson Center G1/SSK-50 Contender (not G2) with raised cheek piece for optimum scope alignment with your eye. Thumbhole grip angle is more natural and comfortable when aiming from a bench, prone, or standing. Complete set includes buttstock, forend, grip bolt, and forend screws. Forend channeled for standard. 810 diameter Contender bull barrel with carbine screw spacing. Listing and template services provided by inkFrog.