Another WW1 submachine gun

This early submachine gun was a prototype designed by FIAT in Italy, in response to a commission from the Italian Army. The receiver and barrel are lifted directly from the Villar Perosa - which FIAT was a manufacturer of during the war - and is fitted with a wooden stock and redesigned trigger group. Interestingly, the gun features a fire selector, which was uncommon during the time. It also has a curved case deflector underneath the ejection port, to push spent casings forward and prevent them falling directly onto the user. This effort by FIAT was pitted against Beretta’s take on the same concept, the M1918, and the Army opted for the Beretta gun, issuing it to Arditi troops in 1918.