Although I would like to refrain from speculating about this gun I would like to point out something from that video. The attendee that was allowed to use it was holding it from the front hanging grip, leading me to speculate that the longshot cocking handle we saw is a locking mechanism for the ammo bin, either to hold it in, hold it shut during firing, or both.
Also I would like to point out that once the gentleman was done firing and handing it back, there was a considerable length of ammo chain hanging from the gun. At first I thought it was a secondary strap for the waist ala Aliens. As for rate of fire counting the pops, about 14 shots were fired over close to 4 seconds, so about 3.5 shots per second.
Edited by Secran, 28 February 2008 - 10:20 AM.