Introducing the Rotation Double Tube Gatrin: Experience the thrill as the gun tube rotates during firing, with both tubes spinning simultaneously for a powerful shooting sensation. Enjoy the dazzling light effects that enhance the realism, especially noticeable at night, and stay in the game with the large-capacity water bottle backpack for continuous shooting to keep opponents at bay. This double tube gatrine features a modular battery pack for easy plug-and-play convenience.