Bill,I'm not saying they don't exist but I'm not aware of anyone that makes a youth o/u.You can always have one cut down though.The best option is probably to pick up a compact semi.Most of them come with spacers and shims so you can change the length of pull.I bought my son a tri star semi when he turned 8.It's gas operated so recoil is pretty soft.It is a little picky with certain shells but as long as he shoots Remington or heavy loads,it functions fine.For the money I paid for it,it's been worth it.He also like to shoot trap so I took him to grices over the weekend to look at some 12 ga guns.Both Benelli and Franchi make compact 12 ga guns.He'll most likely get one or the other for Christmas.