I found it hard to find a version of this model that fitted my needs, most was very well made but really heavy with lots of polys and textures-UV maps. The engine or my computer soon went in to overload! so i spent the time and did a version of my own. The model is based on the AH-64, keeping poly count to a minimum and only using one texture atlas with 4k textures based on Diffuse, Normal, Roughness and Metal. I have also made a second version with basic cockpit interior with transparent windows, for this I'm using one 512x512 size texture for the PBR layers.