There is gameready low-poly sci-fi assault drone with PBR textures.

Equipment consists of 4 engines, one machine gun and 4 missiles.

Model information:

11606 tris and 6804 verts;

. fbx, .obj, .blend formats;

.png format of 4096x4096px textures (but you can decrease the resolution, which will cause to a decrease in quality);

7 textures of general pipeline and Unity and UE4 textures.

Unity and UE4 engines allow to use packed textures to optimize memory usage (for example, in UE4 textures, metallic map is packed in "B" channel of OcclusionRoughnessMetallic texture).

For any questions related to the model or problems using the UE4 and Unity textures, you can ask me.