68123A Smith & Wesson L Frame Model 681 4" Barrel Non Pinned Used Part k66u Model Identification Tip: Swing out Color:MEDIUM WOOD 390330000 45 LC revolver SW-6672A

Model Identification Tip: Swing out the cylinder and check behind the yoke on the frame for a model number

The Early 4th Change designation indicates a specific production variation — verify fitment before ordering

this bolt ensures reliable lockup and smooth cylinder rotation for Models 20 through 929

Finish: Stainless steel

Part Number: K787

68123A Smith & Wesson L Frame Model 681 4" Barrel Non Pinned Used Part k66u Model Identification Tip: Swing out Color:MEDIUM WOOD 390330000 45 LC revolver SW 6672A Model Identification Tip: Swing out the cylinder and check behind the yoke on the frame for a model number The Early 4th Change designation indicates a specific production variation — verify fitment before ordering