Smith & Wesson K Frame Thumb Piece & Nut Blue Steel Old Style - 10179E 2nd Generation Fits: S&W J Frame Model

Fits: S&W J Frame Model 36

We strongly recommend professional installation by a qualified gunsmith

The Model 39 is a first-generation pistol with a simple two-digit model number

The rebound slide returns the trigger to its forward position after firing

Smith & Wesson K Frame Thumb Piece & Nut Blue Steel Old Style - 10179E 2nd Generation Fits: S&W J Frame ModelSmith & Wesson K Frame Thumb Piece & Nut Blue Steel, Old Style This factory original Smith & Wesson K Frame Thumb Piece & Nut Assembly is the external cylinder release lever and its retaining nut. The thumb piece is pressed to release the cylinder latch, allowing the cylinder to swing out for loading, unloading, and cleaning. The nut secures the thumb piece to the cylinder latch mechanism inside the frame. A worn, bent, or broken thumb piece makes