the rumored Super Soaker Thunderstorm

Super-Soaker/Nerf is expected to be bringing back electronic water machine guns,

you can see it here on the Urban Taggers blog

these things were a hit back in the 80's, it was a simpler time back then, many of them were shaped like real guns and some made machine gun sound effects when you pulled the trigger example of course nerf is puting thier own spin on the look so it doesn't look like a real gun.
It hasn't been announced in the US, but you can bet it'll make it's way here soon enough, strictly speaking the toy water machine gun never left the market completely there has always been some on the market out there like this and this so the real significance is that a hasbro is making it so these will return to shelves at major stores