When Yuri is narrating about selling weapons for the US government (this was around the scene when he sells M-16's by the kilo), he mentions Lieutenant Colonel Southern. However, when you see the him, he has Colonel rank, which is a silver eagle. The Lieutenant Colonel rank is a silver leaf, not an eagle.
When Director Andrew Niccol was out buying thousands of AK-47 for the movie, he found that the real stuff was less expensive and more readily available than fakes. After the movie he had to resell them, and found himself becoming an arms dealer.