Although it was not produced in great numbers, it was reportedly one of the most effective heavy AA guns of its era.

The total weight of the Flakzwilling twin-gun mount system reached 26.5 tonnes,[4] making it practically impossible to tow cross-country.

In the end, this mattered little since by the time the gun entered production in 1942, it was used in primarily static, defensive applications.

It is claimed that during the Battle of Berlin the guns on the Zoo Tower were used successfully to support ground forces[citation needed].

[3][clarification needed] The Bundeswehr Museum of German Defense Technology in Koblenz has one of these cannons in its collection.