Hi Welcome into my Profile. and about this product specifically (OKAPI Knife) for Unreal Engine and Unity, Modelled and Unwrapped on Blender then Baked on Marmoset Toolbag and Textured on Substance Painter and at last Render, Light on Marmoset.
Model Specs:
Low-Poly Count = 8989 Vertices, 18228 Edges and 9241 Faces.
Texture Quality = 4K, 24 Bit Depth.
Model Parts = Blade + Grip.
Unity Specs: Game Engine = Unity.
Maps = AlbedoTransparency + MetalicSmoothness + Normal.
Unreal Engine Specs: Game Engine = Unreal Engine 4.
Maps = BaseColor + Normal + OcclusionRoughnessMetalic.