The Flak 36, which included a two-piece barrel for easier replacement of worn liners, and included a new (and heavier) trailer that allowed it to be set up much more quickly, simply dropping the base while still mounted on the wheels. This made it much more useful to the troops during fast moving operations, the basic concept of the blitzkrieg.
Size/Weight: 38.5 x 24.5 x 8.5 cm / 780g