Among the very few fully automatic dart guns Nerf has ever made, this one is simply the best. It is smaller, lighter, quieter, and shoots at a faster rate than either the Stampede or the Vulcan. It has a well-made feel to it (as most of Nerf’s dart guns do), it feels comfortable, and there are no parts that creak as if they’re going to fall off.

https://www.amazon.com/Nerf-N-Strike-Rapidstrike-Blaster-Colors/dp/B00BG8F0H8