NEW ......THESE ARE LIGHT BI-PODS FOR STANDARD BARREL.....THEY ARE ARGENTINE....... AND STYLED LIKE THE STG58......THEY HAVE ROLLER TYPE PLUNGERS .... CASTLE NUTS ARE ATTACHED TO THE LEG ATTACHMENT SCREWS ... AND SPRINGS......................................................................................................................................THE "BIPOD TRAVEL STOP KEY" IS INCLUDED AND IT IS INSTALLED.....(I CHECK EACH BI-POD TO ENSURE IT'S THERE......) ....................................................................................................................... HAD MANY OF THESE IN STOCK BUT NOW ITS DOWN TO THE LAST FEW... .................................................THEY WILL WORK ON ARGENTINE, IMBEL ,G1 ,STG58,..... AS LONG AS YOU HAVE A BI-POD BARREL .............THEY WILL NOT WORK ISRAELI H.B. OR THE L1A1...Will show small dings and scratches from long term storage....picture is of item offered in this listing..