Things I liked: when it worked it was cool but that was seldom.
Things I would have changed: I would make it so that the co2 cartridges would actually engage and not leak or not even pierce. I tried twice in getting this weapon and they both had trouble with this and they both had trouble feeding ammunition from the hopper to the magazine. I give it a thumbs down. Pyarmid air did nothing to address the problem other than to sending a new one
What others should know: Don't buy it, it will frustrate you to death.