The Nerf Jolt is a spring powered direct plunger blaster... with a really tiny form factor.
Its plunger tube is housed inside the trigger handle. Just load a foam dart, pull the priming handle at the bottom downwards, then pull the trigger to fire.
The blaster comes packaged with 2 x Sonic/Whistler foam darts. It is compatible with most Nerf foam darts too.
The average stock range is approx. 25-30ft.
Btw, doesn't it have a rather uncanny resemblance to the "Noisy Cricket" in the movie Men In Black? :)
Review:
Nerf N-Strike Jolt EX-1 - Pack (Front)
Nerf N-Strike Jolt EX-1 - Pack (Back)
Nerf N-Strike Jolt EX-1 - Un-Packed
Nerf N-Strike Jolt EX-1 - Assembled
Nerf N-Strike Jolt EX-1 - Priming Handle
Nerf N-Strike Jolt EX-1 - Scale Comparison with Nerf Secret Strike
Nerf N-Strike Jolt EX-1 - Scale Comparison with Nerf Maverick
Nerf N-Strike Jolt EX-1 at Amazon.com