Originally Jill Ireland wanted to just produce instead of act in the film and suggested Jaclyn Smith for the lead female role. Bronson and Cannon Film's Menahem Golan convinced her otherwise and she decided she would act in the film.
When Ireland and Bronson's characters are being chased by Bracken in the Pickup truck they are shown to be on a two lane highway. In the middle of the chase there is about one second when you see they are being filmed on a one-lane dirt road before they actually turn onto the dirt road.
When Mama One is taken from the helicopter into a car, there are several cars and a truck following. In the next shot from within the car there are no cars at all to be seen through the back window.