Well in my past experiences with the KJW M700, its accuracy always seemed a little....off, very inconsistant. I didnt have a good chonograph at the time so i cant say how much its FPS flucuated. Even still, lets just say you got the gas rifle to be nice and accurate, do you want to deal with the things that come with a gas rifle? Eventual magazine gas leakage, barrel fouling, different performance in different tempuratures? Not to metion the magazines cost a pretty penny and only hold 11 rounds...just my 2 cents.