Other mistake: After the post-bank robbery shootout, a TV reporter is heard describing the shootout as taking place in a "small southland neighborhood." But earlier one of the detectives was heard ordering road blocks at Flower and Figueroa, meaning the gun battle occurred in Downtown Los Angeles. Hardly a small neighborhood.
Other mistake: Drucker is able to shoot out a tire on the getaway car at a distance of at least 30 yards, probably more. Later in the scene, he fires at Cherrito from a much closer distance and doesn't even graze him. Apparently shotguns have selective range.