Tokyo Marui's KSG Gas Shotgun in action. Revealed during the the 55th Shizuoka Hobby Show that took place last week, this is the second gas shotgun from the Japanese airsoft pioneer, the first one being the M870 Series. Watch Mr. Deka Shimamura, the most familiar face of Tokyo Marui, go into action with the KSG against someone armed with the Marui HK416C NEG.