Talk:Zwei/@comment-7295994-20160819021237/@comment-26397825-20160819032400

Of course you can't see it, it's inside. =P

In all seriousness, it's as simple as dividing the actual inside in half by a wall. Then having a little piece on an angle like / at the top of the wall that switches sides, sorta like how a human throat has one that closes off the lungs when we swallow food. When he transofrms it into the weapon mode, that little piece automatically flips sides to allow the dust to be released and closes off the coffee part. Easy peasy.