Smith & Wesson agreement, Walther produced the frames, and Smith & Wesson produced the slide and barrel. The pistol has several cosmetic differences from the original Walther design and strongly resembles a hybrid between the P99 and the Sigma series. In 2005, Smith & Wesson debuted a new polymer-frame pistol intended for the law enforcement market. Dubbed the M&P (for Military and Police), its name was meant to evoke S&W's history as the firearm of choice for law enforcement agencies through its previous lineup of M&P revolvers. The M&P is a completely new design with no parts interchangeable with any other pistol including
Smith & Wesson its most widely used revolver, the .38 Military & Police (also known as the Smith & Wesson Model 10). With over 6 million produced, it became the standard sidearm of American police officers for much of the 20th century. An additional 1 million of these guns were made for the US Military during World War II. The post-war periods in the 20th century were times of great innovation for the company. In 1935 Smith and Wesson released the Smith & Wesson Model 27 which was the first revolver chambered for .357 Magnum. It was designed as a more powerful handgun