Armorer Works AW Custom Adaptive Drum Magazine Winding Mechanism Module for AW / WE GBB Drum MagazinesArmorer Works AW Custom Adaptive Drum Magazine Winding Mechanism Module for AW WE GBB Drum Magazines Made out of metal and ABS. Replacement part for the original Armorer Works AW Custom Adaptive Drum Magazine. Suitable For WE TECH Armorer Works AW Custom Adaptive Drum Magazine. Weight Approx 18g Original Packing