8 absolutely free prefabs to use in your Sci-Fi scenes! This is just a small sample from the SCI-FI Barrels 40 package - 40 prefabs all optimized for ready for scaling, all on the same atlas. Try them out!
All structure models are on a single texture atlas (PSD, editable with Diffuse, Normal, Metalness and Emissive maps) and are very scale-friendly.

Textures in the full package are 2x larger at 1024 px, with layers where applicable.