These provide the tension for the firing mechanism. Scissors: To cut specific parts like the trigger and scope. Assembly Steps
Create a "trigger" using a small paper lever or a folded hook. Sniper+assassin+hack
If you're a fan of games like Sniper 3D Assassin , you can model your paper gun after specific in-game rifles like the Kar98k or AWM by adding a "bolt-action" paper handle. These provide the tension for the firing mechanism
Roll a short, wider tube and mount it on top of the barrel using tape or glue for that "assassin" look. Pro Tips for the "Assassin" Aesthetic If you're a fan of games like Sniper
Stretch a from the front of the barrel back to the trigger mechanism. When you pull the trigger, it releases the rubber band (or a paper pellet pushed by the band).
Fold thicker sections of paper into rectangular or "L" shapes to create the grip and shoulder rest. Glue these to the back of the barrel. The "Hack" (Firing Mechanism): Cut a small slot in the top of the barrel.