S&W M640 178044 Pro 357Mag 2.12" NS Moon Clip SS 5rd Blk Syn Grip 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, this J-frame line offers models capable of firing .38 Special and the more powerful .357 Magnum loads. Smith & Wesson offers this revolver in the fully enclosed Centennial Model. SPECIFICATIONS: Mfg Item Num:       178044       Category:           REVOLVERS                     Type                :Revolver Action              :Double Caliber             :357 Magnum Barrel Length       :2.1" Capacity            :5 Hammer Style        :Enclosed Grips               :Black Synthetic Sights              :Night Sights Weight              :23 oz Frame Description   :Stainless Frame Size          :Small Cylinder Finish     :Stainless Barrel Finish       :Stainless OAL                 :6.63" Barrel Length Range :2.00" to 2.99" Weight Range        :16.00 oz to 31.99 oz