How to Design Custom Weapon Skins in Call of Duty 4: Modern Warfare

By now, you must know that you can customize your weapons the way you want in Call of Duty 4: Modern Warfare. If you had been lazy enough to miss that, here is the simple step-by-step tutorial on how to design custom weapon skins in Call of Duty 4: Modern Warfare.

Step #1
Most of the weapons are present in “iw_04.iwd” file (path: Call of Duty 4/main/iw_04.iwd). Open this file in WinRAR and you will find a list of many game items. Scroll down to find the weapon files.

For example,, if you want to customize the weapon skin for an AK-74U, drag the file weapon “_ak74u_col.iwi” to desktop from the path:


For every gun or any other item you want to design, you must find that particular weapon file with the extension “col.iwi”.

Step #2
Once done, you need to convert this “.iwi” file to a “.dds” one. For this, you need a converter that does this simple job and is free, of course.

There are not many out there, but here is a simple one that does the job well. Download “IWI to DDS Converter”, simply drag the “.iwi” file onto the converter, and it will convert the “.iwi” file to “.dds”.

Step #3
Now that you have converted a “.iwi” file to “.dds”, all you need to do is customize weapon skins just as you would like in Photoshop. However, before you can do that, you will need to install the “DDS Plugin” for Photoshop.

After installing, you will able to edit the weapon skin just as you edit an image. After you are done editing the weapon, save it in “.dds” format.

Step #4
After that, you have to do the reverse process, converting this “.dds” weapon skin to the “.iwi” one. For that, you will need another convert.

Download “DDS2IWI Converter”. The process is again the same. Drag the “.dds” file onto the converter and it will automatically convert the file into “.iwi” format.

At this point, you have successfully designed a new weapon skin in COD4.

Step #5
Finally, you need a mode that uses your custom-skinned weapons. Go to call of duty 4/Mods/ModWarfare and place your new weapon “ak74u_col.iwi” in images folder.

Run the “makeMod” batch file and it will create a file named “z_modwarfare.iwd” in “ModWarfare” folder. Place this “z_modwarfare” file in mod main folder:


Create a server, load that game mode you just created, and enjoy with your customized guns.

This is all we have in our Custom Weapon Skins in Call of Duty 4 Guide. If you have anything else to add, be sure to let us know!

Contributor at SegmentNext.