Bug with clipsize upgrage and kgns weapons

[JakubKosmaty]

Hi!

I made a video to present a bug https://www.youtube.com/watch?v=Vab8VXTZqOQ&feature=youtu.be.

Im using this plugin to !ws https://github.com/kgns/weapons.

Also i have made some debug and hook Hook_OnWeaponEquipPost causes this problem.

I have no idea how to fix it, I would be grateful for your help.