Metal Storm is a Australia company if I remember correctly that discovered the idea. It is now available to the public but the military had it in 1999 and probably before that. Anyway here is the link(winzip is needed).

http://www.metalstorm.com/videos/ms_...uction_mpg.zip
http://www.metalstorm.com/videos/ms_36barrel_mpg.zip

http://www.metalstorm.com/videos/ms_area_denial_mpg.zip
http://www.metalstorm.com/videos/ms_...ghting_mpg.zip
http://www.metalstorm.com/videos/ms_odwyer_vle_mpg.zip
http://www.metalstorm.com/videos/ms_ucav_mpg.zip
http://www.metalstorm.com/videos/ms_40mm_mpg.zip

The first two are the best. The first one is the introduction of the product and the next is a speed test where they shoot 1,000,000 bullets a second!!!