Smith & Wesson Model 640 178043 Complete Specs and Full Gun Specifications

The Smith & Wesson J-Frame has become the most popular small frame personal defense revolver on the market. With decades of reliable performance to its credit, the J-frame line offers models capable of firing .22LR, .22 Magnum, .38 Special and the more powerful .357 Magnum loads. Smith & Wesson offers these revolvers in three diverse hammer designs; the exposed Chiefs Special, fully enclosed Centennial and the hammer shrouded Bodyguard.