Continuity: Arnold goes to the Gay Bar to solicit the help of the guy he saved at the beginning of the movie. The guy is wearing a white shirt and a black vest. During their conversation he takes off the vest, then the scene shifts to another bartender. When it comes back the guy has the vest on, another shot and the vest is off again.

Continuity: Even aside from the ridiculous recoil that a railgun would cause (yeah, I know they don't use gunpowder, but there's got to be SOME opposite movement, surely), how come when the darts (bullets, whatever) go straight through people, they still get thrown backwards? The passage straight through them means minimal energy being transferred to them, and as such they shouldn't be hurled backwards that much.

Continuity: If the bullets from the super gun move at just under the speed of light, how come the bad guys can't hit him or the girl? The bullets would arrive almost instantaneously and that would mean minimal compensation for them running. Plus the guy had them locked on when he shot.

Continuity: At the end, right before the train crashes into the limo, the back of the limo is facing the blocking rail. However, after the train hits the limo, the front half of the car is right next to the rail, and the rear half is nowhere to be seen.

Factual error: The bad guys are able to close in on Vanessa Williams at the end by tracing the signal Arnie sends to her beeper. How could they triangulate her location through a passive, receptive device? Maybe if it was a cell phone, but not a pager.