Forward view of a stationary 42cm "Gamma" Gerat L/16, seen at the gunnery range at Meppen. Redesigned in 1937, this was the heaviest high-angle gun. It was transported on nine SS and one Reichsbahn railcars, and was assembled in stages using several gantry and special cranes. Mobility testing was done in 1943 using a Tiger tank chassis. A total of five models of this mortar were built.