S&W 163690 | Model 640 | .357 Mag/.38 Spl +P | 5rd | DAO

The Smith & Wesson Model 640 (MFG# 163690) is a small-frame J-frame revolver in a satin stainless finish chambered for .357 Magnum and .38 S&W Special +P. It uses a concealed/enclosed hammer with double-action-only operation and a five-shot cylinder, and ships with black synthetic grips and fixed sights. The design emphasizes compact, all-steel construction for reduced felt recoil and snag-free carry ergonomics. Typical use cases include concealed everyday carry and short-range precision practice at the range.

Product Specifications

• The brand is Smith & Wesson.
• The model is 640 (MFG# 163690).
• The caliber is .357 Magnum & .38 S&W Special +P.
• The capacity is 5 rounds.
• The action is Double Action Only.
• The frame material is Stainless steel.
• The barrel material is Stainless steel.
• The finish is Satin stainless.
• The grips are Black synthetic.
• The sights are Black blade front and fixed rear.
• The hammer style is Concealed / enclosed.
• The overall length is 6.56 inches.
• The weight is 23 ounces.
• The package includes 1 x 5-round.
• The UPC is 022188636901.

Compact, all-steel construction and straightforward DAO operation make the Model 640 a practical choice for shooters who prioritize mechanical simplicity and corrosion-resistant materials. Its enclosed-hammer profile and synthetic grip reduce snag and improve handling for everyday carry, while the stainless finish and robust cylinder construction suit regular range use.

Owners commonly praise its reliable performance and solid all-steel construction.

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