I had a Model 63 with 4 in barrel. The best .22 I have ever owned to this day. I love my Ruger Single Sixes, but the model 63 is heads and shoulders the best gun. It was stolen however....I traded a model 17 Kit gun with 6" barrel blued for it and $50.00. The fellow wanted $375 for the 63. I bumped into a fellow in the gunshow that had the 17 and I bought it from him for $165.00. The 63 had Rosewood target grips also...Great gun..