| Smith & Wesson Model 646 | |
|---|---|
| Type | Revolver |
| Place of origin | United States of America |
| Production history | |
| Manufacturer | Smith & Wesson |
| Specifications | |
| Cartridge | |
| Action | Double-action |
| Feed system | Six round cylinder loaded with moon clips |
The Smith & Wesson Model 646 is a six-shot, double-action revolver chambered for the .40 S&W cartridge, manufactured by the U.S. company Smith & Wesson. The 646 is unusual in that is was a revolver chambered for a rimless cartridge generally used only for semi-automatic pistols. In order to effectively use the rimless .40 S&W cartridge, the revolver utilized moon clips, a metal flange which holds the cartridges in place for loading and ejection.
The 646 was offered in a stainless steel finish.