HL1:Source help

[mr.chips]

I downloaded Half-Life: Source for steam. When I went onto Garry's mod, I had the maps and everything. But I was missing some models. I dont have the security guard model. I only have the scientist model in glasses. Also, where can I get the model of the experiment that Gordon Freeman has to push into the beam in the game? Is there anywhere where I can download these models?

 

[Rapstah]

The game is mostly not built of models.