The Smith & Wesson Model 645 is a full size double action/single action semi-automatic pistol chambered in .45 ACP, produced as part of Smith & Wesson's second generation semi-automatic pistol line introduced in the mid 1980s. The 645 succeeded the Model 45 and represented a significant refinement of S&W's large frame .45 ACP platform. The pistol features a slide mounted safety/decocker that allows the hammer to be safely lowered from a cocked position and functions as a manual safety in the down position, blocking the firing pin and disconnecting the trigger. The 645 was built exclusively in stainless steel construction with a 5 inch barrel and fixed sights. It was manufactured from 1985 to 1988, when it was replaced by the third generation Model 4506.

This example features a stainless steel frame and slide with a brushed stainless finish, fitted with wood grips and fixed front and rear sights. Accompanied by two 8-round magazines. No original box or accessories included.

Specifications

• Manufacturer: Smith & Wesson
• Model: 645
• Caliber: .45 ACP
• Action: Double action/single action, short recoil
• Barrel Length: 5.0 inches
• Frame: Stainless steel
• Slide: Stainless steel
• Finish: Brushed stainless
• Grips: Wood
• Sights: Fixed front and rear
• Safety: Slide mounted safety/decocker, firing pin block
• Magazines: Two 8-round magazines