FastBlast

The FastBlast is a Nerf blaster that was released in 1999 under the AirJet Power Plus series.

It comes packaged with three Whistling Micro Darts and two Micro Darts.

Details
The FastBlast is a rather large pump-action blaster. The blaster fires in a way unique to most Nerf blasters with turrets. Rather than the turret rotating with each prime, an air mechanism rotates, sending the air to a different barrel in a clockwise fashion each time. The user pulls the pump towards them, then pushes it in to both send air to the tank and rotate the rotation mechanism. Once fully pushed in, the blaster fires one dart.

It is the only blaster in either the AirJet Power or AirJet Power Plus series to not have a trigger.

History
Judging from a number of sources, the blaster was likely to have had a release in December of 1999.