I always wanted a 4" round butt "K" frame Model 64 with the pencil barrel. I don't believe they were ever produced in that configuration, so the next best thing was to get an original square butt and have the grip frame reshaped to a round butt. Below is the result. I hope to find a Model 67 4" some day and convert that to a round butt as well. Nice Model 66 which looks all original to me.