Is a Hi cap or Mid cap Better for Airsoft?

What Type of Magazine Should I Use in Airsoft? 

This is a very common question and the answer might surprise you. 

A Mid cap magazine is a medium capacity magazine with an internal channel that holds the bbs. In this channel there is a spring and a spring guide. These are what feed the bbs up the channel and into your airsoft device. 

A hi cap magazine has an internal reservoir and a spring wounded wheel that collects the bbs from the reservoir and feeds them into the a channel in the top of the magazine.