You may recall that fake Rainier Arms Raptor Charging handles began to show up on the market last year. At that time, the fakes were fairly easy to differentiate thanks to their inferior components. That is no longer the case. There is a new wave of more convincing fakes finding their way onto the market and the old rules of spotting them no longer apply. It appears that both Amazon and Ebay are laden with fakes. Stick to authorized dealers to purchase your Raptor. See this especially useful post on CalGuns to see the newest fake along side a genuine Raptor Charging Handle.