A surgical instrument includes a housing, an elongated member that extends distally from the housing and defines a longitudinal axis, an end effector assembly coupled to a distal portion of the elongated member, and a stopper assembly operably coupled to the proximal portion of the outer shaft member. The stopper assembly is disposed within one or more cavities defined within the housing. The stopper assembly is configured to prevent longitudinal movement of the outer shaft member along the longitudinal axis and to rotate within the one or more cavities upon rotation of the elongated member about the longitudinal axis.
