Well, we really don't keep tabs of records in airsoft (which should be a nice idea btw) so this one cannot be really confirmed. However, if nobody shows up with an old or newer video showing that theirs is the fastest, we can take this in good faith. Giaco Whatever shows how he is building his "World's Fastest Airsoft Gun" in this video... "I didn't actually calculated its speed yet but I'm pretty sure I'll make it the World's fastest airsoft gun... You'll see... ;)

Watch this video to find out to how fast a Nerf Dart can travel as Giaco Whatever pushes it to the limit. Makes you wonder how an airsoft BB, depending on the weight, can travel... "How fast is the fastest Nerf dart? Will it break the sound barrier? Well... Yes, it does, 2.3 times the speed of sound at standard conditions.

Pretty insane...