I agree with the hop-up comment. ALSO I seem to be the only one with this experience but I managed to put a crack in the pistol grip. They made them very thin in order to make the dimensions as close as possible to the real thing....however the real type 56 doesnt have a F***ing motor in it. I talked to RS and they mailed me a new grip and 4 new mags too

tres happy, it was an expensive replacement but tres happy