If you need a single-firing backup weapon which you can easily conceal during an airsoft game, then the ASG Marushin Derringer is for you. Powered by Green Gas, it comes with a Chrome finish and has a muzzle velocity of around 25-260fps. Made by Marushin of Japan it is distributed by ASG worldwide. Airsoft Mike gets to unbox and review in this video... "Join me as I take a look at the ASG MARUSHIN DERRINGER!"