| Finish | Matte Silver |
| Capacity | 5 |
| Barrel Length | 2 1/8" |
| Action | Double Action Only |
| Overall Length | 6.6" |
| Sights | Black Blade Front Sight |
| Stock | Steel Frame Engraved Wood Grips Steel Frame |
| Grips | Wood |
| Rate of Twist | 6.60" |
| Series | *CA Compliant |
| Model | 640 |
| Type | Revolver |
| Caliber | 357 Magnum |
| Manufacturer | Smith & Wesson |