How to add custom weapons skins in half-life mod?

Does anyone know and could show me how to add custom weapons or skins into a source mod for half life,thanks.

(User was banned for this post ("Wrong Section - This has nothing to do with mapping" - Mezzokoko))

You probably want to ask the programming section.

but there is a wiki page for this but I haven’t looked at it in depth.

Well thanks this should put me onto a good start.

Also installing skins works the same for any mod as it does for default HL2, just place the files in the mod’s folder.

How do I install skins in a mod I couldn’t find anything