Factual error: In the standoff between Meat and O2, Meat pulls the trigger to shoot O2 and his gun clicks - it is out of rounds. This is a common mistake: semiautomatic pistols do not re-cock after the last round is fired - the chamber remains open, so the gun will not click if the trigger is pulled again.
Factual error: The movie is set in 1983, but small satellite dishes seen attached to homes were only available around 1989 when Sky was introduced, and the even smaller sizes visible on some homes did not exist until many years later.