You've lost this argument. The only reason they don't use them is because they don't have to. There are hundreds of millions of magazines in circulation that will be banned, do they will still be easy to get. Furthermore, they could make their own magazines by duct taping a sawed off one to another magazine. They could tape two side by side as shown in the video. A magazine ban would add 2 seconds to the time it takes for someone to kill a person AT BEST. What does it matter if the people they shoot are unarmed? How will you address this?