A friend bought one and his .308 rattled it to bits within 6 months. That was after replacing the pic rail QR screw that stripped itself. Cheap soft metals, poor tolerances and badly finished. My advice would be to save up and get something that will last a lifetime.
I've got a copy as well, and to be honest there's not much in it, ok the fake needs a little adjustment now and then as it loosens up in places, but comparing the prices the Chinese copy is a bargain. And yep definitely worth a punt.