I am looking for an spring powered or cheaper electric powered air soft rifle that needs to go 350+?

I don't want it to be goofy lookin or futuristic just a more typical rifle that does not way a ton. Like less than 6 pounds. It needs to go at least 350 fps and cost somewhere around 150$. If its electric I want it to be no maintanence, no taking it apart and greasing it and all that. Hopefully a big mag but its ok if not. Thanks.