Merge armatures. In Edit Mode reassign hair bones roots parent to head

https://developer.valvesoftware.com/wiki/Collision_mesh#Smoothing

Not hitboxes, physics mesh.

There are no smoothing groups. Instead, an edge is marked as sharped.

For physics mesh, set smoothing to smooth.

There's also Export Filter that accepts wildcards

Select armature
Set action
Export

引用自 Lordx0：

引用自 xdshot：

switch to default units

i use Blender 3.4 default units are meters
everything stays the same

Unit System must be "None"

switch to default units

These are shapes. You can view them when import model and vta in blender.

import smd instead

引用自 Barawasz：

引用自 xdshot：

Weapon model with armature are imported as separate object and have bones copy pose constraints added that are targetting to playermodel bones

So, is there any option to fix this? (Like moving/deleting model bones) Or should I manually move the model and try to fit it as it is now?

It's not error by design. You just import it separately.