No further F.4s were ordered, and a proposal to build a production model powered by an Alfa Romeo-built DB 601A as the F.5bis was dropped in favor of pursuing development of the more advanced Caproni Vizzola F.6M.
Caproni Ca.113 | Vizzola Ticino | Caproni Ca.311 | Caproni Ca.309 | Museo dell'Aeronautica Gianni Caproni | Gianni Caproni Museum of Aeronautics | Caproni Ca.5 | Caproni Ca.309 ''Ghibli'' | Caproni Ca.133 |
It has been said that the Aeroplani Caproni subsidiary in Peru acquired the license rights for local manufacture, but no F.5s ever were built in Peru.
It was designed to carry twice the offensive armament of the F.5, with four instead of two 12.7-millimeter (0.5-inch) Breda-SAFAT machine guns; the prototype F.6M flew with two of these mounted in the fuselage and provision for two more in the wings, although the wing guns never were mounted.
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The sole F.6M prototype was damaged in a collision at Bresso airfield.