Smith & Wesson J Frame Locking Bolt New Style Models 30, 38, 40, 42, 49 - 056570000 Lever correct timing Whether you re a Uncle Mike's Color:Lighter Brown 62978

correct timing

OEM new style thumbpiece cylinder release latch button component features a blued finish and is essential for smooth cylinder operation on modern MIM-equipped revolvers

Part Number: MBU42

This new-style MIM (Metal Injection Molded) thumbpiece features a blue finish and is the component you press to release the cylinder for loading and unloading

Smith & Wesson Model 657 -

Smith & Wesson J Frame Locking Bolt New Style Models 30, 38, 40, 42, 49 056570000 Lever correct timing Whether you re a Uncle Mike's Color:Lighter Brown 62978 correct timing OEM new style thumbpiece cylinder release latch button component features a blued finish and is essential for smooth cylinder operation on modern MIM equipped revolvers