Mini Knex Cannon By knexsuperbuilderfreak in LivingLEGO & K'NEX2,117450Introduction: Mini Knex CannonBy knexsuperbuilderfreakCLICK HERE!!!Follow More by the author: About: how to get ahold of me https://www.facebook.com/scott.elrick.184 More About knexsuperbuilderfreak » just a simple cannon i made gets about 35-41ftpros:very low peiceeasy to bulid and oprategood powersmallcons:none