YouTuber Nighthawkinlight shows you how to turn $15 worth of air hose parts, and a plastic soda bottle, into a remarkably devastating airsoft-like pellet gun that will riddle a foam target into dust.
Except, they fail to mention that the whole thing is powered by a tank of gas or air compressor that will most certainly push the budget for this creation well past the $15 mark. So instead, I guess I spent my morning building an elaborate rattle. [YouTube via Geek]