Both Harsh Times (2005) and Batman Begins (2005) open up with a nightmare sequence going on in the head of the main character, both played by Christian Bale.
According to David Ayer, the script for _Harsh Times (2005)_ was written in 1996. He wrote this script shortly after he wrote the script for Training Day (2001), which was completed a year earlier. The script is semi-autobiographical and is based on his own experiences.
The word 'fuck' and its derivatives are used a total of 296 times in this film, an average of 2.47 times a minute.
David Ayer developed the script at the Sundance Institute's Screenwriter's Lab and the Sundance Institute's Director's Lab.
Emilio Rivera, who plays the ill-fated Eddy who the main characters try to sell their gun to, also acted behind the scenes as a dialect and culture coach for the Welsh Christian Bale and the Chicago-born, Puerto Rican Freddy Rodríguez.
"Emilio Rivera" (Eddy) and "Paul Renteria" (Ranchero) who appear in the Mexican Bar Scene, appeared yearly in the early 1990's in the Historic Chicano Play "The Silver Dollar" performed in front of live patrons in the rough and tumble Silver Dollar Bar on famous Whittier Boulevard in East Los Angeles, CA, which commemorated the shooting and actual death site of LA Times Correspondent Ruben Salazar on August 29, 1970, during the East LA Riots. In the late 1990's they appeared on screen as Brothers without realizing they were in the same film, until the screening at the American Film Institute in Hollywood, CA. Their 4th collaboration was in 2007's Toyota Tundra "Band Roadies" Spanish Television Commercial & Latino Concert Series. Off screen, Emilio and Paul speak to High School students about Acting & Life Issues, participate in Celebrity Softball Games, and can often be seen rolling on the streets of Los Angeles supporting Children's Toy Runs & Various Fundraisers on their Harley-Davidson Motorcycles.
The gun that Jim is seen carrying at the end of the film had to be rented by a Mexican police officer as no firearms were allowed over the Mexican border.