Sixpack,
Follow this file tree on your computer:
FPSC\Files\Gamecore\Guns\Modernday\Commando
Within the Commando folder, find a file named Crosshair.dds. This is the crosshair graphic that this weapon uses during gameplay.
Using a file converter such as DDS Converter 2, convert this file into .bmp format. Open this .bmp in the graphics suite of your choice (Photoshop, etc.) and modify the art to your taste. Save the file as Crosshair.bmp. Convert the file back into .dds format, and overwrite the existing Crosshair.dds file. Voila!
I hope this helps you. Let me know how it works out for you.
Thanks,
Seth Black
"...I'm sorry, could you repeat your question a little louder? I'm a trifle deaf in this ear."
- Willie Wonka