Forum:Dhal Thumper - Spiral SMG

I just found a Blue Dhal Thumper SMG. I wouldn't have picked it up, except that it shoots spiraling ricocheting bullets. It dropped off of a bandit in Treacher's Landing. Has anyone else gotten a Dhal Thumper that has spiral, or has anyone found that spiraling bullets is a random effect that can happen to any gun, not specific ones like Madjack.