Smith & Wesson J Frame Model 42 Centennial Airweight Flat Latch Thumb Piece & Screw, Old Style - Part# J42178 1076 This old-style blue steel unit

This old-style blue steel unit is the correct replacement for both the Model 17 (

MP9F Smith & Wesson Pistol M&P 9 Trigger Bar Assembly Used Part

and 4596 (

Gunsmiths working on vintage firearms

0 is a duty-grade semi-automatic pistol chambered in

Smith & Wesson J Frame Model 42 Centennial Airweight Flat Latch Thumb Piece & Screw, Old Style - Part# J42178 1076 This old-style blue steel unitSmith & Wesson J Frame Model 42 Centennial Airweight Flat Latch Thumb Piece & Screw Old Style Black This is a genuine used Smith & Wesson factory part the old style flat latch thumb piece and screw for the J Frame Model 42 Centennial Airweight revolver chambered in . 38 Special. The flat latch design is specific to early production Model 42 revolvers. If your cylinder release feels worn, loose, or is missing the screw, this is the correct replacement