Step 1: Gathering the materials
Step 2: Attaching the pen gun
Step 3: Attaching the trigger
Step 4: How to Load
Step 5: How to Shoot
Do NOT even point this at anybody and get me in trouble. The refill can slip through the clip and misfire. Also, even without the upgrade I made (Just the original pen gun) I got a lunch detention for shooting it in the ceiling of my school.