Support BladeForums! Paid memberships don't see ads! "Dr. Sharp" is a guy named Bart Bjorkman, who has a thread in the WTB section to buy covert knives and weapons. He is using them to update a book called "Recognition and Response to Covert Weapon Infiltration into Secure Areas, reviewed here: http://www.selfdefenseforums.com/forums/newreply.php?action=newreply&threadid=7752& . Selling or providing information to him will only undermine the cause of civilian self-defense, as our typically unscrupulous legislators will likely use this book as a catalog of "what shall we ban next?" on the path of further devolving the US into a socialist hellhole.