This is the Stechkin automatic pistol 9mm 3d model, originally created in Blender and rendered with Cycles. High resolution textures exported out of Substance Painter for Unreal Engine and Unity as well as default for any other possible use. Material, meshes and texture names follow an easy to understand naming convention. You can download ammo for free:
https://www.cgtrader.com/free-3d-models/military/other/ammo-9x18-pm
Full PBR texture maps at 4K resolution: Base color Ambient Occlusion Roughness Metalness Normal
Unreal Engine: Base color Normal OcclusionRoughnessMetallic
Unity: AlbedoTransparency MetallicSmoothness Normal
Model has clean topology and geometry Textures are 4096x4096 resolution and come in PNG format