Knex MP5K By shadowninja31 in LivingLEGO & K'NEX5,151488Save PDFFavoriteIntroduction: Knex MP5KBy shadowninja31Follow More by the author: About: I like knexing, if you haven't noticed. Check out my photobucket account! More About shadowninja31 »POSTED HERE: www.instructables.com/id/MP5K/