German for "quadruple", referring to any weapons mount that used four machine guns or autocannon of the same make and model, in a single traversable and elevatible mount, used as part of the name for the Flakvierling quadmount 20mm anti-aircraft cannon system, and the experimental HL 131V (Hecklafette 131-Vierling) tail turret, mounting four MG 131...
Found on
http://en.wikipedia.org/wiki/Glossary_of_German_military_terms
A four-barreled gun, typically with two identical shotgun barrels and with two rifle barrels of differing calibres. Built primarily in Germany and Austria. Rare.
Found on
http://www.hallowellco.com/abbrevia.htm
No exact match found.
