When you do this mod you will double your ammo for your vulcan. You can do this as many times as you want.
Step 1: Doubling Your Ammo
The first thing to do is take your roll of duct tape and tape the two belts together. the tape should be about six inches long
Step 2: Finishing Touches
Finally the last thing you need to do is cut where the tape overlaps the shell. If you skip this step your gun will jam.