Continuity mistake: In one scene, Steve Martin is shot in the arm and bleeds, but when the trio return after the riot the wound has disappeared.
Visible crew/equipment: In the opening sequence, Sammo Kam-Bo Hung is scavenging the dead soldiers (with one hilarious twist) - however, when he is holding the ring, in his sunglasses you can see several very much alive crewmembers standing. (00:02:45)