It's a prototype of a german mega stungun.Range about 100 meters, and you can hit people with an electric arc like you were squirting them with a water hose.
from
http://news.com.au/common/story_page...55E401,00.html
Engineers working for the Pentagon's research division, DARPA, and defence companies in the United States and Europe are trying to overcome those limitations by creating an electrically conductive path between a gun and a target but without using wires.
Xtreme Alternative Defense Systems (XADS), an Indiana company, has devised a "close quarters shock rifle" for the US Marine Corps that projects an ionised gas towards the target.
This produces a conducting channel down which a jolt can be sent.
"We will be able to fire a stream of electricity like water out of a hose at one or many targets in a single sweep," XADS president Peter Bitar is quoted as saying.
The device has a range of only 3m, but a 100m more advanced weapon is being planned.
Instead of firing ionised gas, that weapons will use a powerful ultraviolet laser to ionise the air with a pulse of more than 10 million megawatts, creating the conductive path to deliver a 50,000-volt, 26-watt shock similar to the Taser's.
The laser "is said not to harm the eyes," New Scientist says.
Three other companies, two of them American and one German, are also working prototypes of new stun guns.