Oto Melara
The C1 Ariete is the main battle tank of the Italian Army, developed by a consortium formed by Iveco-Fiat and Oto Melara (aka CIO, Consorzio Iveco Oto Melara). The chassis and engine were produced by Iveco, while the turret and fire-control system were produced by Oto Melara.The Ariete is mounted with a 120 mm smoothbore Oto Melara cannon, autofrettaged and stress-hardened to increase durability over extended periods of fire, allowing the use of APFSDS and HEAT rounds.