looks okay. too fast though. easy to get banned for using this. and y did u call it a "MEGAPACK"? its only 1 shotgun mod and its just a simple RoF edit... a pack is where u mod 2+ guns and release them together. megapacks are usually 5+ and really good, not simple. this is not a megapack or even a regular pack. just sayin.
edit: unless there are more shottys that were modded, but u only showed one in the vid? then it could be a pack/m egapack. but still very simple and easy to do.