Buy an extra magazine so you can reload faster! Large High Capacity Wind-up Magazine. High Capacity magazines have a loading door on the top. Simply pour in BBs until the compartment is full. On most magazines you should put at least 100 BBs in the magazine before you initially start to wind it or it will not be able to feed correctly. To wind the magazine turn the wheel on the bottom of the magazine. As you wind the magazine it will make a ticking noise. You will notice that BBs will feed up into the top of the magazine and are visible at the top. Keep winding until the ticking changes to a louder clicking noise which means the magazine is fully wound. Sometimes it is better to wind the magazine after you put it in the gun. If the BB release is bumped while you are putting the magazine into the gun the BBs can spray out and you will have to start all over again.