The Fliegerfaust or "Luftfaust" was a surface-to-air rocket launcher, also called a MANPAD (Man Portable Antiaircraft Device), that was reportedly used by Germany during the end of World War II. The caliber of the Fliegerfaust A was 20mm and the missiles weighed about ninety grams each. The Fliegerfaust A was a prototype model, and the production model Fliegerfaust B was the more common of the two. It weighed 6.5 kg and it was 1.5 meters long. The Fliegerfaust B had a total of nine barrels versus the four on the Fliegerfaust A and there was a two second delay between each rocket firing.