for those who have not heard yet, Ruger is now mfr'g their M77/22's with the barrel threaded into the receiver. they will no longer use the V-Block method. i have a message into a gal (customer service) at ruger looking up the serial # of when this took place. some new rifles out there are old style and some of the new ones are now threaded. Just a FYI. i did ask if they were planning on doing this to the 10/22's too and she said at this time she had not heard anything but would look into this for me as well.