DIY Cardboard MP5 That Shoots Paper Bullets Posted June 8, 2017 in Other Gear & Gadgets by Nicholas C with 17 CommentsTags: cardboard, Paper Gun, Toy Gun Some one made a cardboard MP5. It has a functioning magazine, charging handle, and spits out the paper projectiles. All made of paper, cardboard, rubber bands and toothpicks. The video even shows you how it was made.