The precision engineered kit allows you to use a barrel from the Ruger 77/22 in a 10/22 receiver. The kit makes it easy to convert your 10/22 using the 77/22 barrel .  The kit is designed to work with the Adjustable V-Block and will drop straight in when using one, or, you may modify a factory V-Block and fit it yourself.
This kit works on the 22 Magnum, and it also adapts a 77/XX barrel to the Model 96 lever action as well.