The Smith & Wesson 5906 was produced and manufactured in 1989 by Smith & Wesson and is a third-generation pistol. The 5906 is a double column 9 mm pistol, double action and its construction is all stainless steel.
The firearm is designed to fire the 9 mm Luger Parabellum ammunition. The firearm has the unique feature in that it can't be fired with the magazine out of place while being a true double-action pistol. This feature was designed and developed to meet the requirements of several different law enforcement agencies concerned with providing an additional level of safety for their officers. The S&W 5906 at first came standard with s ten round magazine.
Other notable unique features included a one piece rear wraparound grip, fully ambidextrous safety levers and a choice of either the fully adjustable rear sight for both elevation and windage or fixed sights. An extremely popular model with military and law enforcement units in the United States, it has somewhat fallen out of interest with the emergence of much lighter, polymer framed models from H&K, Glock, and Sig Sauer in both .40 cal and 9mm calibers.