Costanzo's Book and luger markings

I--we forum members are still awaiting info and backup research to tell us what is wrong with the World of Lugers book. This forum continues to disappoint me. Self appointed experts[not yet in print] blast those who have spent years and $ to do research. They open mouth apparently without documentation in hand. Since thier mission is to save us poor slobs from being taken---it would seem that they would be anxious to rescue us. I had one direct response--worried about liability issues---well I expect so If proof is not at their disposal to prove mistaken or made up info in Costanzo's book. I wonder if Mr Costanzo reads this forum? I don't blame him for not posting? Is he not a friend of the Master Ralph? Whom do we trust in the Luger world? I still seriously want to know what is wrong with the book----anyone else agree or has the subject been forbidden as was the K word?