Revealing mistake: Hamlet is killed and in the next scene is being carried with his arms stiff to his sides. The men carrying him go over a bump, jolting Hamlet, and he blinks.
Revealing mistake: From the front view of Karen's gun, you can see empty chambers.
Revealing mistake: When the guy that was shot in the chopper is falling, you can see the protective, yet flaming mask on his face.
Revealing mistake: When the car at the end flips over, you can see a circular object underneath the vehicle, about the size of a tyre (very obvious in slow motion). This is the device that "lifts" the vehicle for it to flip on one side, timed with the appropriate explosion.
Revealing mistake: When the blond lady dies, she is seen in a body bag. Look at her nostrils as they widen, revealing that she is not quite dead.
Revealing mistake: In the scene at the end of the movie when the detective is listening to the Senator's confession on tape, there are no speakers attached to the stereo.
Revealing mistake: Look at the gun fired behind Shale at the firing range. The person doesn't pull the trigger, there is no flash, the slide doesn't move, there is no smoke. But the gun still kicks.
Revealing mistake: When they attach a GPS device to the gang's car and they watch their situation on the computer screen, you can see on the left top part of the screen some playback, stop, rewind, . buttons, showing that it's a pre-made video that they play manually.