Breda M37 - Wikipedia The Mitragliatrice Breda calibro 8 modello 37 (commonly known as the Breda mod. 37 or simply Breda 37) was an Italian Medium machine gun produced by Breda and adopted in 1937 by the Royal Italian Army. [2] It was the standard heavy machine gun for the Royal Italian Army during World War II, and continued to be used by the Italian Army after the conflict. [3]