This is kinda interesting actually.
I admit I purchased 1 airsoft product for my AR. It was a Magpul PTS CTR stock. Though not the "real-deal", but looking into it, the only real difference is in the quality of the polymers used to create the stock. I know, I know... you can't trust "Chinese knock-offs" (kinda a funny statement coming from an Asian guy) but the PTS branch (based in Hong-Kong) is fully endorsed by Magpul. They make everything to true spec as defined by Magpul. So if the only real difference is in the quality of the polymers, and I'm only going to the range with it, is that really so bad? Also, who's to say that the original stock (although provided by Questar) wasn't originally made in China in the first place?
Kinda an offshoot response to the thread...