14 x 27.36 x 31.23mm
The Panzerkampfwagen E-100 was a German super-heavy tank design developed towards the end of World War II. The largest of the Entwicklung series of tank designs intended to improve German armored vehicle production through standardization on cheaper, simpler to build vehicles. By the end of the war, a single prototype chassis of the E-100 had been produced, and it was only partially completed. After the war, the prototype was shipped to the United Kingdom for trials, but was later scrapped
This variant the twin-gun Flak 40 was one of the most effective anti-aircraft guns featured in WW2. Even distribution of ammo depended on its automatic power rammer for rapid-fire. Heavy bombers aside, this gun's firepower exterminated Soviet armor after the Battle of Berlin.