By far one of the best investments I have made. The rail is made of a strong metal, and the finish is excellent. I've had this for almost a year and there is no rust or scratches. The edges are smooth as well, making it very comfortable to hold. The only gripe I have, is that I had to slightly modify the handguard of my KWA CQR. It worked perfectly well with my JG M4, however. If you are in the same situation I was, where you love the classic and clean look of the A1 style handguards, but want some rail real estate for accessories....BUY THIS. I used to this to attach my SureFire, and I could not be happier!
Strong grade metal
Easy to install
Does not affect battery space
Compatibility is iffy with certain gun brands
Sticks rather far out from the handguard (About half an inch)
Rating: [5 of 5 Stars!]