Knex Box Mag (Blue Rod) By OneTastyBurger in LivingLEGO & K'NEX1,04715Introduction: Knex Box Mag (Blue Rod)By OneTastyBurgerFollowMore by the author: This is my knex box mag (sort of) it needs a mag push and box is for looks but it holds 10 blue rods and can be adjusted to fit any gun. Should I post?