Does anyone know anything about a Ruger 10/22 with a 22" barrel? The only ones I've ever seen have had either a 16.5" barrel or a 20" barrel.

I picked one up the other day at a local gun store that was sitting on a rack with 2 other, shorter barreled 10/22's. This one is a typical Ruger configuration with wooden stock and stainless steel barrel. It measures 22" from the muzzle to the front of the receiver.

I checked Gallery of Guns and all they had listed were 16.5" or 20" guns.

Is this model still in production, or is it a current model that's just a little hard to find, as I've never seen any others with this length of barrel?