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 with Carl Walther and is made in Germany. A .45 ACP model was released in early 2007, after making its debut at the SHOT Show. In addition, compact versions are available in .22LR, 9×19mm, .40 S&W, .357 SIG, and .45 ACP. The .22LR Compact is made by Smith & Wesson in the United States. Subcompact versions are available in 9×19mm, .40 S&W and .45 ACP. Smith & Wesson introduced the SD VE series in 2012 in hopes of remaking and improving the discontinued Smith & Wesson SD. The SD VE design has an improved self-defense trigger and a comfortable, ergonomic,