The Wildcat ended up being the primary shipboard fighter whenever US entered WWII. The F4F ended up being barrel-shaped, with angular wingtips and rudder and a narrow-track undercarriage. The F4F was well-armed and reliable, and ended up being a natural shipboard aircraft, probably simpler to land on a carrier deck than on land. The F4F never ever had a operational rate limitation.
The FM-1 ended up being fundamentally a F4F-4 built by the Eastern Aircraft, in its factory at Linden, nj. There was one change: The FM-1 had only four weapons, with ammo increased to 430 rounds per gun. This form of the Wildcat ended up being primarily designed for escort companies, since the F6F had been changing the F4F regarding fleet providers.