The famously weapons-obsessed YouTuber Joerg Sprave has taken a robot vacuum and rigged it up so that it can fire a Glock. Why? Well, because he's Joerg Sprave. The pointlessness of this object aside, we do have to admit that he solves the technical challenges with some simple and clever engineering:
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You also have to love that he made it a point to retain the robot's cleaning functionality.