Q: Do you know how much it weights? I am wondering if it is lighter than the metal versions which are avaialble for airsoft?
We never measured the M249 handrail. But based on our experience, our nylon polymer (plastic) parts are more than 6 times lighter than the equivalent steel version (see photo below). They are 3 times lighter than the equivalent aluminum version; we didn't publish the weight, but the equivalent aluminum version weighs 1.5 oz. Seeing these evidences, I am sure our RIS is much lighter than the metal equivalent.