BCM Keymod picatinny Polymer rail?

[BigMoby]

Looking to add a Magpul Angled Front Grip to my new AR 15 I have a KMR rails system so I need a Keymod 1913 rail piece and wasn't sure if anyone has used the polymer version of Keymod rail. I believe it's only 11 bucks cheaper than the aluminum but was just curious if anyone is using the polymer ones.
thanks all

 

[bigblue]

I have both and I trust the aluminum. It's not that I've had the polymer rails fail so it's mostly a mental thing. Why take a chance when you don't have to?

 

[troda]

Polymers fine. Whatever one makes you feel better.