I have a 4" stainless GP100. Its a great revolver. Accurate, extremely well built. Fit and Finish is beautiful. The GP100 has a reputation for being as tough as nails. Bill Ruger, while proud of his first double action revolver, the Security Six, and its siblings, decided that it couldn't stand the constant pounding from the 357 cartridge, so the GP100 was designed to handle that. One of the selling features of the Ruger revolvers was that the frame wasn't cut in half, to install the lockwork, like the S&W revolvers, making it extremely strong. The GP100 has been in production for more than 25 years now, and there have been very few complaints. So... can anyone argue that the GP100 isn't the greatest Double Action revolver ever made?