KAF Supplies Wunderbar Soda Systems are the most popular choice among bar & restaurant owners when it comes to serving drinks. A Wunderbar soda gun comes equipped with multiple buttons, all capable of serving the most common drinks that you serve most. Let KAF create a custom installation for you. Representatives will come to your establishment to build and install a custom system to best suit your needs. As part of our Corporate Services, KAF will ensure the maintenance and upkeep of your guns, making sure that they never let you down.