A surgical instrument including a handle assembly, an elongated member, and first and second jaws positioned adjacent a distal portion of the elongated member. At least one of the first or second jaws is movable with respect to the other jaw. A first movable member is movable between first and second positions to effect jaw movement in a grasping action and a second movable member is movable between first and second positions to effect jaw movement in a cutting action. A selector is engageable with the handle assembly and movable from a first position to a second position, wherein in the first position the selector is in blocking engagement with the handle assembly to prevent jaw movement in the cutting action and in the second position the selector is in blocking engagement with the handle assembly to prevent jaw movement in the grasping action.