Ultra low poly model In the model used diffuse and bump maping textures are included
The acronym 'ZSU' stands for Zenitnaya Samokhodnaya Ustanovka, meaning 'anti-aircraft self-propelled mount'; the '23' signifies the bore diameter in millimeters; the '4' signifies the number of gun barrels. It is named after the Shilka River in Russia. Afghan soldiers nicknamed it the 'sewing machine' due to the sound of firing guns. It is also referred to by its nickname of 'Zeus'.