Then I happened upon OfficeGuns.com. You'd probably want call me an Office Supply Poseur since it took me this long to finally stumple upon OfficeGuns, and you'd probably be right. While they do showcase a number of highly advanced guns you don't want to take anybody's eyes out, you just want to have some fun. So I suggest you stick to the Double Maul (named after the Mauly binder clips they like to use) for your inter-office warfare needs. Now unless you are friends with an international importer/exporter you won't have access to fancy German binder clips, but you can instead use normal binder clips.
The Mauly 19 and Mauly 32 are nothing more than standard binder clips that are 19mm and 32mm wide. An easy alternative for the Mauly 19 is the Universal 3/4" binder clips, and instead of the Mauly 32 you can grab some Universal 1-1/4" binder clips. With low prices like that on binder clips, why not pick up enough to keep all your enemies at bay. After you've successfully built a Double Maul and used it inflict pain on your least favorite Graphic Designer, why not try out more of the Guns at OfficeGuns.