Everything is packed in the projects including textures.

There are a lot of modifiers ON, so you can edit the models.

Shaders and Materials are simple you can play with them for different results.

The scene SET includes a couple of models:

• - Colt 1851 Navy Pistol
• - Editable Parts
• - Pro-realistic materials 
• - Make your own material combinations
• - Engraved wooden handle material (Make your own drawings)
• - Modifiers are ON (You can use the Low or High Poly)
• - HDRI

The scene is 2 196 230 million faces. That's the whole amount of polygons for all of the objects in the scene.

Yes