Societa Italiana Aviazione (SIA) is a firearms manufacturer based in Italy. GunSpec lists 1 Societa Italiana Aviazione (SIA) firearm spanning machine guns, introduced in 1918.
Firearms by Societa Italiana Aviazione (SIA)
SIA Mod. 1918 — Machine Gun · 6.5x52mm Carcano · 1918 · Out Of Production