Originally Posted by
UncleNorby
If I recall correctly, Mossberg has a youth gun that includes several spacers so you can get the gun to fit correctly. When the kid gets bigger, you send in a card that comes with the gun, and they send you a standard buttstock for free. I'd go with that, and even consider adding a quality recoil pad. Also, I'd go with a 20 Ga.
You can get a youth model Mossberg 500 20 ga that comes with a voucher to receive a free full size stock later on. Pretty good option. And, a 20 ga is not only plenty, but definitely the gun to go with for a skinny 10 year old.