A game controller for controlling electronic games comprising a controller chassis and an actuator system including: an actuator body pivotally mounted to the controller chassis; a strike plate coupled to the actuator body; a trigger adjustment system having an arm; and an actuator adjustment control screw received in a screw thread disposed within said arm. A portion of the actuator adjustment control screw may engage with a portion of the strike plate and said portion of the actuator adjustment control screw creates an end stop to limit movement of the actuator body.