Fist, i've seen this video:
https://youtu.be/er6okw0xEPU
in this video the guns worked like the tf2 guns should, but.

When i installed the mod every single gun acted like a bow (i haven't used any crossbows yet
sry) So i thougt "maybe one of my mods is incompatible" so I created a secondary save and quit. Then i unsubed all of my mods (exept for this one and and the other one) and only enabled dawnguard with this. No difference.

What am I doing wrong?

Note: Sorry for my bad english it's not my main lanuage