Maybe I'm a little confused on whether there is a difference between the "K22" and the "17", but they still make the model 17 Masterpiece, they're calling them "Classics" or something now. I was getting really close to either buying a used one or a new one, but after a lot of research, I found that the accuracy wasn't what I had always been lead to believe, and a lot of people have significant problems with sticky extraction. Was leaning towards the new ones because they're drilled & tapped for a scope, which would've been the only way my eyes could take advantage of the accuracy.
