Do the mod tools not include the weapons models? I was looking to place a weapon model on a table but could not find any models for any of the weapons included.

Would the only way be ripping them from the game and bringing them in as custom assets?

EDIT:
I found where all the models are located however some of the weapons you can use are missing from there, where are they found?

I don't think 3arc has or will release all of the weapon models. The only ones I've found even after downloading the extra 50 gigs of mod tool assets were all base guns, a couple of each class. The only one that includes all of the attachment variants is the Kuda (ap9 is the internal name).