Gentlemen, I've been in the US Army for 12 years and still going strong with 3 Combat tours (2 Iraq, 1 Afghanistan). I'm trying to purchase an AEG for me and my 14 yr old son. We would like an M4 style rifle with very dependable internals and externals. I want it metal to get it as close to the real thing. Also if it is possible, I would like something with RIS/RAS so we can attach scopes/red dot. 300-400 FPS and I don't mind spending between $150-250. It will be used for small to medium size field. We are begginers but we want a very dependable, reliable and upgradeable rifle. Also with a tight bore barrel to make it accurate. Any help would be greatly appreciated! Thanks!