Guns shoot and grenades can charge up but neither hurt entities.
The workbench immediately disappears when I place it.
I can't open the attachment menu and if I try to open a crafting table the gun disappears.

Most of the guns also look enchanted even though they aren't.

These problems are only in my server, the mod works fine in single-player worlds.
BTW, my server and client has the same mod versions, Minecraft is in 1.19.2 and I'm using Forge.

edit 1: I tried to reinstall the mod and nothing changed except now the guns are one-handed and don't fire.

edit 2: I used the exclusion method and removed 0 mods, this removed the enchantment texture but I still can't fire the guns.

edit 3: I tried only using the gun mod and framework, but it didn't work.

edit 4: I tried joining the server with a vanilla client and I was able to join. The server seems to be unable to recognize the mod.

The issue was not with CGM, the server thinks no mods are installed.