Many models I create them from scratch.
Many models are made by great designers and I edit them in order to fit my needs.
If you are into modding, unreal engine, 3dstudio max, dioramma making or have any relative design needs feel free to download.
Models are based on real models, prototypes, or mixture of real models with existing technology and\or blueprints, mostly within scale.
Good high detailed models if you need to design your own unique pc game or historic documentary dioramma or architectural presentations.
Models can be rendered in: 3d studio max,vray, lumion, podium, unreal engine, twin motion, cinema4d, maya, and also in most models you can add motion in: 3d studio max, maya, unreal engine, etc.