3761 S&W J Model 37 (Airweight) Cylinder Assembly w/Yoke Blue Steel .38 Special Model 647 40 S&W Locking Block &

40 S&W Locking Block & Pin – Used

J Frame Model 632 (

This is an old style

check behind the yoke on the frame for a MODEL NUMBER

40 S&W (Model 410)

3761 S&W J Model 37 (Airweight) Cylinder Assembly w/Yoke Blue Steel .38 Special Model 647 40 S&W Locking Block &072180000 Smith & Wesson New J Frame Locking Bolt Pin Fits Models: 60 J Frame 642 J Frame 640 J Frame 331 J Frame 638 J Frame 38 J Frame 31 J Frame 34 J Frame 337 J Frame 632 J Frame 63 J Frame 631 J Frame 649 J Frame 332 J Frame 37 J Frame 342 J Frame 42 J Frame 36 J Frame 49 J Frame 637 J Frame 3761 Smith & Wesson Revolver J Model 37 (Airweight) Cylinder Assembly w Yoke (for 3" Barrel) Blue Steel . 38 Special Cylinder Length 1. 54", Diameter 1. 31"