I am a real cs coach in Jiangsu. The real CS has three kinds of equipment. One is an air gun, using BB bullets. Need protective gear, dangerous (close range can hurt people, need full-body protective gear), it is not easy to judge the outcome, and it is impossible to have it in urban areas (public security crackdown). The second is a special air gun and paintball. After hitting a person, the color is left on the person as a mark. However, it is dangerous (it can hurt people at close range and requires full-body protective gear), unable to judge the outcome in time, and expensive (bullets are consumables). The last one is more common, laser laser type. The gun emits invisible light and has sound effect. Wearing an induction vest and helmet, after being hit, there is sound effect and vibration, and you can set your health. If you are killed, you will be prompted and the gun will be invalid. I suggest you play the third kind, which is also more. It's nice to have a party barbecue when you're tired of playing.