I recently purchased a "Nazi" FN Hi Power with Waa140 proofmarks. I also on the advise of other forum members purchased a book by Anthony Vanderlinden titled FN Browning Pistols Side-Arms that Shaped World History. Upon reading up on the Hi Power that I now own, Vanderlinden claims that you should not fire any Hi Power that has "Waa140" proofmarks. This due to sabotage by factory workers at the time the gun was made. I have put approximately 200 rounds through mine since buying it. I did have to replace the extractor but I believe this was broke prior to me buying the gun. The gun seems to work fine. Does anyone have any further info? Should I worry about the gun blowing up?