Here are some clues that i hope help you spot a fake CRKT.

This is an email i sent to CRTK

   I have been looking at CRKT M16 on Ebay and was wondering if there is anyway to spot a fake CRTK?

The following is an email I recieved in response to my email above from a CRKT Rep.:

  Make sure the knife has our logo on the blade and it should have the model number and country of origin on the base of the
blade near the handle. If for some reason you believe you have come across a fake reproduction, please let us know!

Thanks for your support of CRKT!

Lindsey Phelps
Columbia River Knife and Tool
800-891-3100 / 503-685-5015

Please look to see if model numbers on ebay match the model numbers on the CRKT website.