There are a number of references to 80's arcade games in the film. In the opening credits there are flashes of arcade boot up sequences and the high score table of Robotron: 2084 is briefly displayed. Verona's sidekick is seen playing Berzerk in the car. The humanoid graphic of Berzerk is also displayed on the male toilet door Chev enters.
The gun Chev uses in the bar scene is a Springfield XD. The loaded chamber indicator on the top of the gun indicates that there was no round in the chamber (the gun wasn't loaded) and the cocked position indicator indicates that the striker was down and the gun could not be fired even if it was loaded.