Due to the fact that the Raid Deathrun mod does not allow you to devmap, I thought I'd make something here for anyone having trouble devmapping.
All you need to do is download this: https://mega.nz/#!jVckmS5Q!R4oL9_wBJOpOPOVdI2BzX-Jd4uK6weWSDreAXCAlq5Q
Alternative ZIP File: https://mega.nz/#!KBcxiIIL!rugMmcz57Aq5d8aikDkq5diiFTwgKNoeDIGh21vEa5o
This is a mod that is developed specifically for devmapping in mind. It is originally called deathrun_sxk made by sxk. This is a slightly modified version, as I've tweaked a few things, but thanks to him.
Unzip it and put it in your Cod4 Directory/Mods folder. (If your game is through steam: C:\Program Files (x86)\Steam\steamapps\common\Call of Duty 4)
Once it's in there, you can simply load the mod in game.
Once you're in the mod, you can type the following into the console:
Obviously, change <mapname> to the name of the map. Example:
It's that simple!