Smith & Wesson K Frame Model 10-7 Hand (Cylinder Rotation) - .38 Special - 10129B 5903ssv This is not a DIY

This is not a DIY installation

Mainspring & Swivel

smoother performance on

The serrated surface provides a positive

Part Number: Oil035

Smith & Wesson K Frame Model 10-7 Hand (Cylinder Rotation) - .38 Special - 10129B 5903ssv This is not a DIYSmith & Wesson K Frame Model 10 7 Hand This genuine S&W hand rotates the cylinder on K Frame Model 10 7 revolvers chambered in . 38 Special. A critical internal component for reliable cylinder indexing and timing. Key Details: Part Number: 10129B Frame: K Size (Medium Frame) Model: 10 7 Caliber: . 38 Special Condition: Used, old style Function: Rotates and indexes the cylinder Important: May require fitting by a qualified gunsmith for proper function