Small Knex Gun With True Trigger By fishbob1234 in LivingLEGO & K'NEX1,0163Save PDFFavoriteIntroduction: Small Knex Gun With True TriggerBy fishbob1234FollowMore by the author: pros: small and light good distance cons: trigger gets jammed the ram rod jams ( rarley). Step 1: The BarrelStep 2: The TriggerStep 3: The HandleStep 4: Connecting!