J343 Smith & Wesson Used J Frame Model 640 .357 Magnum Bare Hammer Model 65 It's extremely popular in competitive

It's extremely popular in competitive shooting

308 ammunition

Model numbers were introduced in 1957–58

This critical action component includes both the rebound slide and rebound spring

Weight: 1 oz

J343 Smith & Wesson Used J Frame Model 640 .357 Magnum Bare Hammer Model 65 It's extremely popular in competitiveJ343 Smith & Wesson Used J Frame Model 640 . 357 Magnum Bare Hammer 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 the serial # . If this is the case contact us and we will need a