Cheek Riser
Also: Adjustable Comb · Cheekpiece
An adjustable comb section that raises the cheek to align the eye behind a scope mounted high above the bore, giving a repeatable cheek weld.
A cheek riser is a movable section of the comb that lifts the shooter’s face to the height a modern optic demands. Because a riflescope and its rings sit well above the bore, a flat factory stock often leaves the eye too low, forcing the shooter to lift the head off the wood and lose a repeatable contact point. Raising the comb closes that gap so the eye lands naturally in the center of the scope.
A solid, consistent cheek weld is what makes the riser worth installing: when the face returns to the same spot every time, parallax and head position stay constant and groups tighten. The correct setting depends on the sight height of the chosen rings, which is why most precision stock designs make the riser quick to adjust and lock.