if its the 275 mag, then its shooting at around 25 rounds a second. i believe there are 3 mag sizes for that particular model in the video, 165, 220 and 275. i believe thats a kit on an ar15 that accepts .22s and ejects from the bottom, so pretty cool stuff, though i think its something like 1800 dollars for the upper reciever, though the mags are kinda cheap for how much they hold. i wonder how effective this would be in a war. cheap light ammo, such light recoil that you can aim well enough 1 handed, and solid cover for a good 10 seconds. i'd kinda be like a flame thrower, with a really really really long flame.