@Windawz I'm sorry, but I can't run the game right now, I don't even have Steam or the game itself installed on this computer.
If you have some time, try it yourself. Open a new map, make a hollowed box composed of only SKY texture, put the player start, an env_sprite somewhere inside, and compile it with VHLT v34.
What was the result in-game? Do you see the weapons' view model all black or they appear originally as you were viewing the model on any model viewer program? If it's showing brightened, then all other mdl-based entities around will do too.