A magazine fed shotgun may not use the space within a magazine tube. An accessory, such as a light or a laser, may be inserted into the magazine tube. A switch that operates the accessory may be located on the pump grip of the shotgun. The switch may be connected to the accessory with a wiring harness that may extend through an opening in the tube. The opening may be elongated so that the wiring harness can move with the pump grip when the pump grip is cycled by an operator.