Lego paper wasp gun . Lego gun shoots paper wasps quite accurately, fairly easy to reload. . I got kinda bored with rubberband guns. They are great, but impractical: rubber bands are far too precious to be shot away in classroom warfare. They're supposed to be weapons, not ammunitions. The practical ammo is the paper wasp (otherwise known as paper stinger, paper pellet, paper V, etc.). It is plentiful, disposable, relatively accurate and safe, and can hurt without much effort. However, paper wasp guns seem to be too far behind rubberband guns. I've found only 2 or so Lego guns that were designed to shoot paper wasps. So, I decided to do some experiment, and this gun is the first fruit. It is robust, small (can be smuggled to, say, school), reliable. Loading is quite fast with some practice. It's easy to build too. I PROMISE I'll make instruction if more than 6 people comment. Now, some photos.
this is a more preferable trigger configuration. Looks less realistic, but more compact and easier to handle.
The gun's performance is ideal when using this kind of paper wasp (so-called the 7.62mm by my classmates). It gives a balance between damage and accuracy.
This slightly oversized ammo also works pretty well.
This smaller size of paper wasp (the "5.54 mm") stings more, but accuracy, especially over greater distance, is reduced.
Nothing explain the loading and firing better than a video.