There are two kind of fbx files are existing for low poly and high poly images.
Low poly models is suitable for mobile games.

Asset includes mesh(.fbx), materials( body,body metal,glass,bottom,propeller and gun), prefab and textures.
Also you can find sample scene for the model.

All 18 texture sizes are 4K ( AlbedoTransparency, SpecularSmoothness,Normal for each material).
These textures allow you to make PBR. All of them are in png.

High Poly Model has 31.945 tris , 15.839 faces.
Low Poly Model has 10.793 tris , 5.323 faces