The gun that Katrina uses is the exact same replica of the gun that Big Nose Kate uses in the movie "Tombstone" and was actually purchased in the town of Tombstone, Arizona specifically for the "Justice Hill Texas" shoot.
A tip of the hat (Easter Eggs) to Nate, Alanis Morissette, the T.V. Series "Lost", Blade Runner and The Good, the Bad and the Ugly.
