Comparing: Hummel vs. FV304

In the autumn of 1942 the Alkett company started the development of a new SPG with a 150-mm gun. To boost new vehicle production, it was planned to use the readily available components of Pz. III and Pz. IV vehicles. The SPG was made on the same chassis as the Nashorn heavy tank destroyer. A total of 714 vehicles and 150 ammunition carriers that used the same chassis were built.

Prototype light SPG developed by Vickers. Development started in 1947. However, the prototype was not manufactured until 1953. The design of the SPG was already obsolete by this time, and the project was canceled.