Great helmet overall. It's a plastic helmet- the shell, the rails, etc. All screws on it are metal. It's very light, and feels good on your head. Not much else to say- it's a great-looking helmet that doesn't weigh you down, and simply looks hardcore.
My only complain would be is that it is a -tad- on the small side, HOWEVER, it will fit anything from tiny to medium/large heads. My head is on the large side, and in order to get a proper fit, I had to remove a few of the pads. Don't worry, it comes with a few half-thickness pads to fit it comfortably. I currently only have the front, a thin one in the back, and a thin one in the middle, and it feels fine.
Very lightweight, yet sturdy.
Plenty of velcro space for patches.
Rails for lights and other accessories.
Leather chinstrap for comfort.
Easy to adjust.
May be too small for people with larger heads. Smaller heads need not worry at all.
The points where the straps and the helmet connect are made of plastic. In my experience, these are prone to breakage---However, these ones seem durable, like the rest of the helmet.