Game-ready model:
Rifle - 31,192 tris
Burris XTR 14 - 15,564 tris
Bipod - 9,816 tris
Magazine - 6,762 tris
Suppressor - 736 tris
Stok - 4,498 tris
All body kits are on separate 4k textures.
Low poly - Blender
High poly - Zbrush
Baking - Toolbag 4
Texturing - Substance 3D Painter
Rendering - Cycles