I was watching Ronin this morning for the 100th time probably and I started to think what is Vincent's (Jean Reno) background. Any answer would be hypothetical because the movie never tells you. I figure he uses a Beretta, maybe Italian Police or their equivilant to the CIA. Dont forget he has that friend, the one that introduces the Ronin concept. That friend seems to have a lot of knowledge and connections in the spy world, after all he helped them located the Irish woman, Irish man, and the ex-KGB agent. Just a thought.