Tokyo Marui have released a series of magazine adapters designed to allow owners of other Marui AEGs to use the 1,200-round Marui Twin Drum Magazine that is made for the standard M4 AEG and M4 High Cycle Custom AEG Series. Just select which adapter you need as this is not a universal adapter. Available adapters are for the Tokyo Marui M4 NEG, AK NEG, G3 AEG, AK AEG, MP5 AEG, and G36 AEG.