Optical Sight

https://www.cgtrader.com/3d-models/military/gun/optical-sight-a49a49f9-0a75-4d56-8892-070af87aef6d
3d model Optical sight

Blender+Cycles
Unreal Engine Uproject
Unity Package
3ds max 2016 + Corona
PBR Textures 4096 x 4096
FBX
OBJ