The Fiat G.50 had its origins in a design produced by Italian aeronautics engineer Giuseppe Gabrielli. This represented a major change for Fiat, who previously relied on chief engineer Celestino Rosatelli. External to Gabrielli's influence, the fighter's design was also shaped by the issuing of a specification during 1936 which sought a modern interceptor aircraft for the Regia Aeronautica (the Italian Air Force). 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 104 litres (27 US gal) tank, increasing its range from 645 kilometres (401 mi) to 1,000 kilometres (620 mi). This scale model kit contains parts moled in grey and clear plastic, and includes decals, photo-etched parts, and resin parts.