Nintendo Kôsenjû SP Gun 1970. Light beam gun. In order to understand my next post and upcoming posts. You have to know that the Kôsenjû SP series (2 guns and 6 targets) were sold separately. This pistol (which is scale size plastic) emits light from an incandescent bulb with the squeeze of the trigger. Said light beam will then activate a sensor on the target which will create an action.