The shot of Jack Daniel's that Justin Morck takes after meeting Morgan in the bar was an actual shot of Jack Daniel's. The bartender grabbed the wrong bottle. It was 10am and at least 7 different takes of that shot were taken.
The majority of the scenes that take place in the beginning of the film with just actor Randy Spence, were shot during a grueling 30 hour day.
In the original draft of the script Morgan, Shepard, and Rich shoot fruit in the field scene, not beer cans.
Originally, the basement scene where Shepard locks the bullets away was supposed to be in a gun and ammo shop. The day of shooting the store canceled and the filmmakers were forced to adapt the scene to a new location, the basement of writer/producer Matt Robinson.
Shot in 17 days.