This will show several examples of my best low poly models for weapons, like Cannons, Case-mates, Barbettes and any other related. 

A low poly Model designed originally for the Activeworlds 3D Interactive Environment. 

From the Spanish American War. 

Casemate Cannon1 from Maynila, protected Maynila Bay from 1860's 

Philippine Bamboo cannon from 1899, during the Philippine American War, used by the Philippine KKK.