I just got one too and used it a bit at border wars. ROF is not very fast but not bad, Hopup needs adjusted but I'm not at all surprised that amano's chronied 340.Little sucker is loud and hits way harder than a marui mp7(say the plates at ttaccc). Coma used it for the afternoon and was impressed. My scope mount was backward as well.
Unbelievable price for such a well-equipped little gun.
One small problem though-the ring on the swivel mount is not that strong. Use both the front and the back sling mounts to avoid losing your gun.
Grand Poobah of T.W.A.T.