Revealing mistake: In the closeup of the M-60 mounted in the assault truck in the big shoot-out, the linked ammunition has no primers in any of the bullets.
Ballistic: Ecks vs. Sever (2002)
1 revealing mistake - chronological order
Directed by: Wych Kaosayananda
Starring: Antonio Banderas, Lucy Liu, Gregg Henry, Ray Park, Talisa Soto
Other mistake: When Ecks, his wife, and Sever are driving to Severs lair you can see that the cut on Ecks' cheek is just a sticker because there is a different reflection on his skin from the sunset.
Robert Gant: There are no innocent people in this world Sever, you know that. Only killers and victims.
Trivia: A video-game adaptation for the Nintendo Game Boy Advance was being made alongside the film. However, the movie was held up in production, and the game ended up being released a year before the movie. It was also based on an earlier draft of the script and was thus quite different plot-wise. A "sequel" game following the movie much more closely was subsequently released after the movie. The games were notable for being first-person shooters that pushed the GBA's hardware to its limits.