I bought this in the extremely hot summer of 2012 and absolutely loved it. I live in Seattle in the summer and Bellingham for the rest of the year as I go to WWU. That being said, this gun has survived and preformed perfectly in an unusually hot (95 degrees) summer in Seattle, and a quite cold (25 degrees) of Bellingham. I had no problems in pouring rain, and when it got muddy I just cleaned it off afterwords.
The rate of fire is through the roof, so much so that the hi-cap mag that came with it couldn't always keep up with automatic fire, causing blank shots. The iron sights are also very accurate, and the trigger is very responsive. The battery and its wires can be difficult to fit in the stock, but you can do it with some effort.
I took it apart in December of 2012 and I did not find a spec of rust or dirt inside it (other than in the barrel. I have played in the pouring rain and dusty summers with it. When I put it back together my charging handle was a little loose, but that was probably my fault.
It is not a full metal gun, but the majority of it is. After using it for this long and seeing how well it has held up, I wouldn't trade it for a full metal gun.
Rate of fire is through the roof.
Solid make, played hard with it for seven months now and nothing has broken.
Accurate iron sights.
Very rain and dust proof.
Preforms well in below freezing temperatures as well as 95+ degrees.
Fairly light for such a sturdy gun.
Fire selector and charging handle are both satisfying sounding and feeling.
Butt plate takes some effort to get off, so it is highly unlikely to fall off (could be considered a con)
Butt plate takes some effort to get off (could be considered a pro)
Little room for the battery in the stock makes it a pain to put in, and the wires inside can affect the adjustment of the stock.
Doesn't come with a battery.
The hi-cap mag that came with mine couldn't keep up with automatic fire.
Orange flash hider is impossible to remove without a saw or file.
Not at all lefty friendly.
Not a con, but be advised it doesn't come with a foregrip.
Rating: [5 of 5 Stars!]