J321 Smith & Wesson Used J Frame Model 649-3 Bodyguard .357 Magnum .312" Smooth center pin your revolver may be a

your revolver may be a pre-model K-22

non-reflective surface

It will not fit older one-piece barrel designs

This is a used OEM cylinder stop and spring assembly removed from a functioning Smith & Wesson Model 18 Combat Masterpiece revolver

J321 Smith & Wesson Used J Frame Model 649-3 Bodyguard .357 Magnum .312" Smooth center pin your revolver may be aJ321 Smith & Wesson Used J Frame Model 649 3 Bodyguard . 357 Magnum . 312" Smooth Trigger Comes with hand, hand spring, & trigger lever. How to determine the model number of your Smith & Wesson Revolver. Swing out the cylinder , check behind the yoke on the frame for a MODEL NUMBER. Model numbers began in 1957 58. So if there is no model number then your revolver may be older than 1957 58. In this case we can possibly still find the part you need with