In “Turnstile_03_Source.zip” file you will found The 3ds Max (2021) and substance painter (8.3) source files are attached to the project, you can change textures and re-export them to any convenient format. And UnrealEngine (4.27) .uasset files for easy integrate

This is part of the set “Turnstiles” at UE Marketplace You can buy this and other designs here