Smith & Wesson J Frame Model 42 Centennial Airweight Flat Latch Thumb Piece & Screw, Old Style - Part# J42178

Smith & 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 to restore proper function and the original look of your Centennial Airweight. Compatible Models Smith & Wesson J Frame Model 42 Centennial Airweight — .38 Special (Old Style / Flat Latch) Part Details Part Number: J42178 Condition: Used — Original Factory Part Style: Old Style Flat Latch Includes: Thumb Piece & Screw Frame Size: J Frame Caliber: .38 Special Always verify compatibility with your specific serial number and production date before installation. If unsure, consult a qualified gunsmith.