Heyho,

just place the files dircetories "models+sounds+textures" in your "media"-directory.

Add the text of "weaponspecification" to your "media/models/weaponspecificaton

remember:

the end of your "weaponspecification.xml" should look like this:

  </weapon>
</weapons> # this is important! if your added lines are beneath </weapons> they don't count!