I personally have never used one but from what I've seen and heard from the speculation threads, they are pretty much just like the Double Shot. I have used the DS, and it is horribly bad. Equation:
At my nerf wars head shots are prefectly ok. We enforce a rule were you have to wear glasses. We fight in bases where the only thing that gets picked off is the head. So if you ever play at my nerf wars be prepare to take a head shot.
Well, If your drum breaks in mid war your screwed. If a clip breaks you still have more clips. When It comes down to it like that, Clips would be a better alternative, Also with all those parts making a 36 clip possible it's bound to jam or break.
good point. I will take that in consideration when I get it and finally use it.