Bill Hammack, AKA The Engineer Guy, explains why he calls this Nerf three-dart blaster’s cascading air mechanism “the epitome of good engineering” in this video on TikTok and YouTube.
It’s an old video, but watching his explanation of how the blaster’s series of valves trigger just one barrel at a time — and how to defeat its design to fire more than one dart — is immensely satisfying.


















