relatively poor quality, was prone to cracking or abrasion by sand or dust, limiting visibility. In addition, exhaust fumes tended to accumulate in the cockpit, so pilots would often fly the fighter with the canopy locked open. Consequently, an open cockpit was installed in the second batch of 200 machines. After 1939, the bulk of production for the G.50 was transferred to the CMASA factory in Marina di Pisa, Tuscany. The first versions of the G.50 could be outfitted with several different configurations of armaments: either a single, or a pair of, (.5 in) Breda-SAFAT machine guns in the nose and an additional pair of (.303 in) Breda-SAFAT in the wings. Later versions of the aircraft could be distinguished by the addition of a larger rudder. Further development During 1938, the Regia Aeronautica requested that two-seat trainer variant of the G.50 be developed, designated G.50/B (Bicomando – dual control). The first of these were constructed during the second half of 1939. The student pilot sat in the front in a closed cockpit with two roll bars. The first five aircraft were part of the 1a serie ("first series"). Further production was entrusted to CMASA, who completed 106 G.50/Bs. A single G.50/B was later transformed into a reconnaissance aircraft, which was equipped with a planimetric camera. Another G.50/B was adapted with a tailhook for the purpose of operating as a naval reconnaissance aircraft from the aircraft carrier Aquila, but this vessel was never completed. During September 1940, a slightly improved version, designated as the G.50 bis. The primary advantage was the extended combat range, which was provided by an additional tank, increasing its range from to . The ultimate version of the fighter was the G.50/V (Veloce – fast) built in mid-1941 by CMASA and equipped with a Daimler-Benz DB 601 engine of 1,075 CV. During tests at Fiat Aviazione's airfield in Turin, it reached a top speed of in level flight and climbed to in five minutes 30 seconds. By this time, however, Gabrielli had already designed the Fiat G.55, and Fiat had obtained the licence to build the 1,475 CV Daimler Benz 605, so the G.50/V was used to test new equipment and then scrapped. In total, production of the G.50 reached 784 aircraft; 426 of which having been manufactured by Fiat Aviazione and another 358 being built by CMASA. There were 58 fighters that were recorded as export