Stay out on the battlefield longer and keep your AK47 firing with this 600 round high capacity magazine from CYMA. This magazine is constructed from a full metal casing and high quality internal spring. The universal design of these magazines allows for use on almost every TM compatible brand of AK47 AEGs including JG, CYMA, Dboys, G&G, Crosman, ect. The winding wheel on the bottom of the magazine smoothly feeds BBs from the storage chamber into the high quality internal spring. Due to the function of all high capacity magazines, they function better when broken in. To do so, players can put a small amount of silicon on the feeding spring and load and unload the magazine a couple times for perfect function. Make sure your AK47 is ready for any enemies that may come your way thanks to this 600 round magazine from CYMA.