The Franchi SPAS-12 is a combat shotgun manufactured by Italian firearms company Franchi from 1979 to 2000. It is a dual-mode shotgun, adjustable for semi-automatic or pump-action operation.

 

This is done for the weapon challenge at polycount.com 

 

Modeled in 3ds max and rendered in real time in Marmoset Toolbag 2 (both high and low poly). 

 

The spas has an albedo with a transparency map in its alpha channel, a metalness map, a gloss map and a normal map. The screenshots use 4k maps for demonstration purposes. The model is 7.511 vertices.