Hi all,
I am looking into buying a used BG-E6. This seems to be one of the few grips where buying the original grip is undoubtedly worth it, since it has an Mg-body as opposed to the (otherwise excellent) third party grips with a plastic body.
However, there are quite a few good counterfeits of the BG-E6 out there (see e.g. http://*******/61m2a or http://*******/KruR8) so the seller might not even be aware that he is selling a fake grip.
I am wondering how I can identify a truly original Canon BG-E6. One thing that comes to mind is weighing the grip. However, I found confusing quotes for the expected grip weight. How heavy is the Canon grip supposed to be?
Any additional ideas on how to identify a fake (short of X-raying it...)?

