Tokyo Marui 300rd Magazine for M16 / M4
A high capacity replacement of the standard magazine for the Marui M16 series rifle. Fits M4, M4 RIS, SR16, M16A1, M16A2, M16VN, M733 and CAR15. Large thumb dial on bottom of magazine allows you to wind it up and feed 300 rounds of BBs into your AEG. Full metal construction.