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 586 Other manufacturers have used transfer bar system in their revolvers. Many Smith and Wesson purists felt betrayed with what they feel is an unwarranted change. The 586 was discontinued in 1991. After a 13-year absence, Smith & Wesson reintroduced the 586 in 2012 with the aforementioned safety modifications. It is currently produced with 4-in. and 6-in. barrel lengths as part of its Classic line of revolvers. The 586-8 features a redesigned and improved yoke. In 1987, seven years after the release of the Model 586, there were reports of cylinder binding with some types of standard .357 Magnum ammunition for