Knex Powerfull Crossbow Range: + 200ft

http://www.youtube.com/watch?v=bj0RabSHaB8

Step 1: Knex Crossbow: Make the 2 Arms

Look to the photo´s and make them

Step 2: Knex Crossbow: Make the Head Portion

Look the photo´s and make it

Step 3: Knex Crossbow: Finish It

You're almost done