A lockable carrier mount including a main body, an actuating mechanism and interference locking member, and a securement member. The actuating mechanism is configurable between locked and released configurations. The actuating mechanism includes rotatable actuator having a blocking portion with at least one protrusion extending radially further from a rotational axis of the actuator than other parts of the blocking portion. The interference locking member is coupled to the main body and has an engagement surface for selectively engaging the blocking portion. The engagement surface can abut the protrusion in the locked configuration to prevent rotation of the actuator relative to the locking member. The securement member is operably coupled to the actuating mechanism and configured to move toward a secured configuration when the actuator is rotated in one direction and move toward a released configuration when the actuator is rotated in an opposite direction.