Entity in "Ghost Mode" ? SWEP creating this entity?

I’m recreating the “Target Dummy” plasmid from Bioshock into GMod and one of the things I thought would be cool would be to do that “Ghost Mode” thing from most of the tools, like the thruster where you take out the weapon, and you see the model of the entity but it’s see through and gray. I’ve already got that down I think, but another problem I’m hitting is how to actually create the entity. How would I make the entity spawn where I’m pointing, and if I create another the first one is removed. Many thanks to whoever can explain this :j: