||Its a decent rail system. I bought it for my G&G M16. As of now, it still isn't on my gun, After a few hours of messing around with it, I've determined that it disagrees with a mock gas tube. I pulled the gas tube off my gun, and the rail fit. With the tube in, it does not want to seat properly into the delta ring. It's a good rail. Nice markings, light weight, and good finish. Unfortunately, the rail doesn't seem made for rifles with a gas tube. Also, the package does not include rail covers. Not a big deal given that the rails aren't sharp at all.
Rails aren't sharp
Actually does not include rail covers
Does not accept a gas tube properly (at least for my G&G)
Installation is unnecessarily finnicky
Rating: [3 of 5 Stars!]