I guess this fits the more minimalist art style of the previous games, but I think a more shiny, darker, detailed polished chrome look could fit the more detailed style of Unturned II.
The main difference of the weapons of the Unturned II are the 3D models, in the future I hope to see all the weapons with triggers which is already confirmed since Nelson removed but added the triggers again, I think that metallic weapons in Untunred II will have a texture similar to the textures of bullets.