What is smith and wesson 645?

The Smith and Wesson 645 is a semi-automatic pistol that was first introduced in 1985. It is chambered in .45 ACP and has a 8-round magazine capacity. The 645 features a stainless steel construction, a double-action/single-action trigger, and a manual safety. It has a 5-inch barrel and adjustable sights for improved accuracy. The 645 was designed as a duty and self-defense weapon, known for its reliability and durability. It was eventually discontinued by Smith and Wesson in the 1990s, but it remains a popular choice among firearms enthusiasts and collectors.