LaRue Tactical is selling an upgrade kit for the Ruger 10/22 that includes a LT178 Rail, LT719 QD Ultra-Low Mount and LaRue Cheek Pad. The kit sells for $295.
I have no doubt that these rings and mount are of the best quality, but you must admit that it is quite amusing to see rings and a mount selling for more than the rifle they will be mounted on! You can get a Ruger 10/22 just $235.