The Autoblindo 40, 41 and 43 (abbreviated AB 40, 41 and 43) were Italian armoured cars produced by Fiat-Ansaldo and which saw service mainly during World War II. Most autoblinde were armed with a 20 mm Breda 35 autocannon and a coaxial 8 mm machine gun in a turret similar to the one fitted to the Fiat L6/40, and another hull mounted rear-facing 8 mm machine gun. Development During 1937 the Italian Ministry of War issued specifications for a new armoured car (autoblindomitragliatrice), to fulfil the requirements of both colonial police long range patrols and army reconnaissance units for the new armoured formations. In May 1939 the Fiat-SPA and Ansaldo-Fossati consortium unveiled its armoured car proposal, named Abm 1, at the inauguration of the new Fiat Mirafiori plant near Turin; two prototypes had been built, one outfitted for military and one for police use. After trials by the Army, in May 1940 the armoured car was standardised, adopted with the official designation Autoblindo 40, and a first batch of 176 vehicles ordered. At the request of the Army the prototype had undergone numerous changes before it was adopted: redesigned front hull, recessed headlamps under armoured covers, improved ventilation, new cast spoked wheels, and flat, shortened mudguards. The first AB 40s were delivered in March 1941. Description Autoblindo 40 The Autoblindo 40 was built in small numbers in 1940. Armament consisted of two 8 mm machine guns in a turret. During production a need for heavier armament was envisioned and so the AB 40 was redesigned as the AB 41 which was the same vehicle except for a new turret with a 20 mm autocannon. Most of the 24 AB 40s that had been built were then converted to AB 41s. Autoblindo 41 The Autoblindo 41 (named after its first year of production, 1941) was a further development of the machine gun armed AB 40. Made with an all-riveted construction, the AB 41 had four-wheel drive and a four wheel steering system that proved troublesome. The spare wheels fitted to its sides were free to rotate, thus helping the vehicle over rough terrain and allowing it to drive over higher obstacles. It could also be fitted with wheels that would allow it to run on railway tracks and some were modified further to better serve in this role, with the addition of sand boxes and rail guards to deflect objects from