Corrected entry: This is a pretty huge plot hole. We are shown Preston switching guns with Brandt in the rebel execution scene. At the end of the film, when they check the computer to see which gun was used when Preston killed the police squad, it comes up as Brandt's. Problem is, the switch happens long after the scene with the police squad. Furthermore, only one gun was switched. Even if the logic worked, Preston would have been using one of Brandt's guns and one of his own.
Jez
26th Aug 2003
Correction: The entire point of the scene, as we find out, is to make Preston 'think that he's won', so even if he were using one of each gun, the mistake is his own: he doesn't spot that fact, and thinks he has fully incriminated Brandt.
Jez