1. 
   RARDEN
   The L21A1 RARDEN is a British 30mm autocannon used as a combat vehicle weapon. The name is a contraction of the Royal Armament, Research and Development Establishment and Enfield. The Royal Armament Research and Development Establishment (RARDE) and the Royal Small Arms Factory (RSAF), Enfield, at ...
   Found op http://en.wikipedia.org/wiki/RARDEN
   
   
2. 
   Rarden
   The Rarden (L21A1) is a British long-recoil automatic, aimed, single-shot cannon designed during the 1960's for the destruction of APCs at a range of 1000 meters, the penetration of main battle tank armour from the side, the destruction of soft targets and as a deterrent against low flying slow airc...
   Found op http://www.probertencyclopaedia.com/browse/FYR.HTM
   
   

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