I know I'm playing casual but this thing kinda melts, even late game against real players. Was really disappointed with how bad the regular M8 was and decided to try the barrel out and WOW it was surprisingly good, even at medium to long ranges.
On paper it doesn't seem all that great, especially with its recoil pattern but once you get used to it, it will serve you well (It is a bullet hose though, you'll run out of ammo a lot).