J600 Smith & Wesson Used J Frame Model 317-2 Airlight 2" Barrel .22LR k64n new style) Model 66 -

new style) Model 66 -

13 LB reduced power rebound spring

Disassembly and assembly of the firearm is required to replace this part

146 inches

Aftermarket parts may not meet the same standards as genuine Smith & Wesson components

J600 Smith & Wesson Used J Frame Model 317-2 Airlight 2" Barrel .22LR k64n new style) Model 66 -J600 Smith & Wesson Used J Frame Model 317 2 Airlight 2" Barrel . 22LR Used Gun Parts and Accessories Cleaned, Inspected, and Guaranteed! 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