BCM's new rail covers promise to reduce heat under rapid fire for KeyMod rail systems; including their KMR and KMR-Alpha hand guards. I do some rapid fire shooting and use a digital thermometer to test just how well they actually work!
Ban The ATF Shirt: http://amzn.to/1KN6ndK
Mrgunsngear Amazon Store:
Music by Youtube Creators & Machinima Sound