How to Make a Multi-Shot Nerf Gun

This is my first instructable so i'm going to do my best at showing you exactly what to do

Materials:
1 Marshmallow crossbow
12 nerf darts (anything but streamline darts)
1 rubber band
1 gatorade bottle cap

Now, take the rubber band and wrap it around all 12 nerf darts

Now jam the gatorade cap down the front until it wont go any further

finally take the bundled darts and jam them in front of the cap (if its hard to load squeeze the bottom of the bundle to flatten the bottom)