? carbon fiber - OpticsPlanet Exclusive Firefield Fringe 10in Carbon M-LOK Rail

Nice hand guard for the price. I question the Carbon Fiber construction, as it appears to be simple polymer/plastic injection (has clear injection tab marks) and can be easily deflected with hand squeezing. Not super rigid. No visible carbon fiber anywhere. I haven't cut it into sections to verify. Like I said, nice hand guard. I would have given it 5 stars if it was advertised as Polymer, but when you buy carbon fiber, you expect carbon fiber.