"Im giving this gun a 3/5 simply because of the fact that this gun did not have any hop up whatsoever. I was using King Arms .20 bbs and shot the first clip through it, amazed with the rate of fire, but all of the bbs were falling within 40 feet. I began to take the gun apart, only to discover that there was no hop up unit in the barrel. It was a straight linear barrel. I guess overall, this gun is ok. The rate of fire and blowback action was impressive, but if it did have a hop up unit, I would have kept it."