Powerfull K'nex Handgun (slingshot) By knexfreakbuilder in LivingLEGO & K'NEX9153Save PDFFavoriteIntroduction: Powerfull K'nex Handgun (slingshot)By knexfreakbuilderFollowMore by the author: This is a handgun i am working on: it has 7 layers and is realy powerfull (for a handgun made out of knex) It use its full length for shooting