Pros:

Call of Duty!
Looks great in 1st and 3rd person views
FPS Arms
L4D2 characters match their respective models
Adds more depth to the Call of Duty map remakes

Cons:

Clipping issues - nothing major
Not for L4D1 survivors - see below

Conclusion:

When you're playing a Call Of Duty map and you just need to make it more Call Of Duty, this is what you need. Couple this with the Call of Duty 4 gun sound pack and you have yourself some badass Call Of Duty zombie shooting action!

This is a great little mod with a very little clipping issue but takes nothing away from the visual aspect while playing. They run like L4D2, they shoot like L4D2 and they even keep the L4D2 voices, which still match the characters.

Request: If you could put the L4D1 survivors into the Call of Duty 4 models and release them with this, that would make this complete.