This rail is a nice piece for the money. It's made of aluminum or at least an aluminum alloy but it doesn't feel cheep. I picked this up to put on an ICS and the description is right when it says it will only fit on real steel style barrel nuts, because ICS does not use real style so I had to get a new one.
A few things I fount annoying are the edges are sharp and that it doesn't say in place. The sharp edges can be taken care of by putting rail covers on. When I say that it doesn't stay in place I mean it likes to rotate within the mounts. The best way I can think of to remedy this problem would be to get a fake gas tube which will hold the rail in place, but I have not tried this. One other thing is that there is not enough room to put a battery inside but that is common with rail systems.
Made of Aluminum alloy
Feels strong and solid
Good price for the build quality
Can rotate in the mounts
Rating: [4 of 5 Stars!]