I bought this rail about 4 months ago to put on my Kwa Lm4. It fit great on there with no barrel nut issues. And it looked amazing with a 10 inch barrel and a noveske kfh sticking out the front. I have since got the 7in vtac version and they are both amazing quality. I have put both of the rails on both of my PTWs as well and the barrel nuts do not have any problems screwing all the way on. Where most rails don't fit onto PTW uppers unless they are mil spec.
Great quality from Madbull
Paint is pretty durable, doesn't chip
Comes with 3 rail sections
Comfortable to hold with or without gloves on.
The rail sections are kinda thick and awkward
SOME qd mounts for optics or flashlights don't like the top rail (hard to get on)