Continuity mistake: In the scene where the team is in the process of clearing the sniper, Miller says, "When the 203 goes, we're going to go all the way down to the left side." The team member with the 203 (the grenade attachment for the m16) never shoots, only the 240B (the full assault rifle). (00:06:00)
Other mistake: When Matt Damon is in the dark alley pursuing the intermediary who will lead him to the General, it appears, at the first sight of his right leg thigh holster, that the holster is empty. However, several scenes later, when the camera is behind him, you can see the reflection of light off of the magazine, in the magazine well of the pistol.
