My 12 year old has been shooting a Parker Challanger for 3 years. He hunted with it this year at 42 lbs. which will kill any deer walking with the proper shot with a sharp broad head at a resonable range (not over 20 yards). Parker will upgrade the limbs and draw length module for 50.00 and you can ship it to them or have one of their dealers do it. I paied about 250.00 for his bow but am not sure what the cost is this year. The upgrade is a sweet deal if your boy is growing like mine. Don