Smith & Wesson Model 640-1 Magnum Centennial .357 Mag, 2.125 in, Stainless, Pre-Lock, DAO, 5-Shot J-Frame
The Smith & Wesson Model 640-1 Magnum Centennial is a strengthened J-Magnum frame revolver and the first production S&W J-frame chambered in .357 Magnum. This pre-lock, double-action-only variant features a 2.125 in heavy underlug barrel and all-stainless construction with a brushed/satin finish. It includes fixed sights with a pinned serrated ramp front, and factory-style Hogue Monogrip rubber stocks are installed.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent - Sharp lands and grooves.
Specific Condition Notes: Light cylinder wear from prior use. Timing and lock-up are solid.
What’s Included
- Molded leather open-top holster for S&W J-Frame/Model 640 (tan)
- Hogue Monogrip rubber stocks (installed)
This 640-1 is part of the Magnum Centennial series and is built on S&W’s strengthened J-Magnum frame to handle .357 Magnum. It retains the pre-lock configuration with an internal (enclosed) hammer and double-action-only operation.
The 2.125 in barrel is specific to the 640-1 variant and uses a heavy profile with an underlug. The revolver is constructed from stainless steel throughout the frame, barrel, and cylinder, finished in brushed/satin stainless.
Sighting is straightforward and durable: a fixed rear notch paired with a pinned serrated ramp front sight. The smooth trigger complements the DAO mechanism for consistent pull characteristics.
Factory-style Hogue Monogrip rubber stocks with finger grooves are installed, providing a secure, hand-filling hold. This revolver was made in the United States.