based on the earlier  5.56mm   SG 540  and is also known as the  Fass 90  ( Fusil d'assaut  90 /  Fucile d'assalto  90) in  French  /  Italian  or  Stgw 90  in  German  ( Sturmgewehr  90). Posted by ultimateblog at 8:27 PM Email This BlogThis! Share to Twitter Share to Facebook