Smith & Wesson "N" to the largest .44 Magnum type frame. In 2003, the even larger "X" frame was introduced for the .500 S&W Magnum. Most Smith & Wesson revolvers have been equipped with an internal locking mechanism since the acquisition by Saf-T-Hammer. The mechanism is relatively unobtrusive, is activated with a special key, and renders the firearm inoperable. While the lock can simply be left disengaged, most gun enthusiasts prefer "pre-lock" guns. In 1953 the U.S. Army was looking for a pistol to replace the Colt 1911A1. To obtain a bid from the U.S. Government, Smith & Wesson began working on a
Smith & Wesson Model 61 had numerous reliability problems and according to Smith & Wesson historian, Jim Supica, many were returned to the factory for repair. According to Supica, many of these returned pistols were not actually repaired. Employees at Smith & Wesson simply took a new pistol off the line, restamped the serial number and shipped the pistol to the customer in place of the old one because repair time would have been too costly. Model 61 engineering changes: Smith & Wesson Model 61 The Smith & Wesson Model 61 (also known as the Smith & Wesson Escort or simply the Pocket Escort) is