This gun is amazing. Its says it shoots 370 FPS but my chrono average was 381 .20 g BB's. I have a 9.6v Num-Chuck Battery and it has an insane ROF. I think it was like 13 BB's pre second.The rails are metal except the top one. Only the front sight is metal, back sight is plastic. Mag is metal. The stock is retractible. The wires hang out in the back when you fold the stock but I think are wrapped in electric tape so the seem secure. The cheek riser actually helps aim. The hop up is in the charging handle (This gun is fully ambidextrous: Charging handle is movable to each side, Mag release, Selector Switch). The Mag is metal. The battery is a little difficult. THe gun comes with an alan key that you have to fold the stock, unscrew the lowest most screw pull the stock out and insert the battery, then use the alan key to screw the stock back on. But Overall great gun.
Strong Plastic Outer Body
It's a little weighty. Its not a problem for me, but for some it might be.
Battery Insert is a little too much, but at least it doesn't fall out in a war.
Great Gun, I highly recommend.