Confronting a Narc

So, I was wondering what u thought about this: when I confronted him with my realization that he has NPD, he replied, "can I be semi-NPD?". I said, "buddy, u are full blown!". He replied, "I'm not full blown and that's the story I'm sticking to!". When I provided him with some articles to prove it, he did not like the proof and told me to give him different reading material or "I will hunt u down, tie u up, and torture you, the filthy tramp that u are". I then gave him an article about the Madonna/Whore complex that narcs have. He replied, "you are killing me"....lol