The Modello 38 Carbine was chambered to fire the new powerful 7.35mm round. The standard 6.5mm bullet was found to be too light and the Italian army wanted a round similar to the 7.92mm fired by the Mauser. The Modello 38 featured a folding bayonet and issued to the troops in 1938. The change in calibre cause a major logistic headache to the Italian supply system as many rifles were still using the old 6.5mm round, so many units were forced to revert back to 6.5mm calibre rifles.