The FarCry2AutoHotkey.zip file you have requested: Tools and Utilities / Far Cry2 - Iron Sights Toggle - 2.07kb is not available. Perhaps try browsing all files for the game Far Cry 2 and upload any files you want to share or are missing. This is the only information we could locate:
You can change the keys used near the top of the file (it should be easy to find). By default "[" and "]" are used to enable/disable the toggle functionality (turn the script on/off). Toggled crouch is "c", non-toggled crouch is mapped to "left cont Autohotkey Script for Far Cry 2. Allows the ability to toggle Iron Sights and Monocular zoom. Plus the ability to use an additonal non-toggled (press and hold) crouch key.