Minecraft can't see guns in modern warfare mod in my server?

I added the modern warfare mod to my minecraft server and it loads but when I go to the modern warfare tab its invisible or gone all the items help!

Have you added the mod to your client as well as the server?

What mod is it? There's multiple modern warfare mods

Did you check to see if the mod needed any depencies? Some mods only work when you have other mods installed?

What version of minecraft/forge are you using? It might not fully support your version