Desert Eagle Pistol.
You can access the blender file to change the pistol's material from silver metal to gold, and vice versa. All that needs to be done to swap them is to unplug one node and plug the other one in.
OBJ (OBJ, filesize: 2.26 MB), BLEND (Blender, filesize: 3.27 MB), FBX (Autodesk FBX, filesize: 1.04 MB), PDF (PDF, filesize: 95.6 KB)