For the portfolio shots, I decided to add more faces on the bevels and cylinders, and keep the fabric on the stock as actual geometry. But for game optimization, you can bake the fabric into a texture and reduce the number of polys on a rounded shapes. 40976 tris, 4k texture set (again, for optimization may use 2k, it looks quite ok) Design inspired by this tutorial: https://www.artstation.com/marketplace/p/MG0ro/rifle-gun-tutorial, but I changed some details and modeling approach (in tutorial author models for subdiv, I use highpoly-lowpoly-bake approach).