Smith & Wesson K Frame Cylinder Stop & Spring Assembly - Used - K419
Smith & Wesson K Frame Cylinder Stop and Spring Assembly
This listing is for a used OEM Smith & Wesson cylinder stop and spring assembly, part number K419, for compatible K-frame revolvers.
- Part Number: K419
- Condition: Used OEM
- Manufacturer: Smith & Wesson
- Product type: Cylinder stop and spring assembly
- Frame: K Frame
- Part scope: K-frame internal component
Model Compatibility
The listed rimfire fitment includes the following Smith & Wesson K-frame model families. The source fitment information also states that this internal part is interchangeable across K-frame rimfire and centerfire models. Verify the cylinder-stop geometry, spring, frame configuration, and original part before ordering.
| Model family | Listed chambering | Fitment note |
|---|---|---|
| Smith & Wesson Model 17 | .22 LR | Listed compatible |
| Smith & Wesson Model 18 | .22 LR | Listed compatible |
| Smith & Wesson Model 48 | .22 Magnum | Listed compatible |
| Smith & Wesson Model 617 | .22 LR | Listed compatible |
| Smith & Wesson Model 648 | .22 Magnum | Listed compatible |
| Smith & Wesson K22 | .22 LR | Listed compatible |
Because this is a K-frame internal part rather than a cartridge-contact component, the source fitment notes cross-compatibility across K-frame rimfire and centerfire configurations. Confirm exact geometry before installation.
Function and installation
The cylinder stop and spring assembly helps lock and index the cylinder correctly during revolver operation. A worn or incorrectly matched part can affect timing, lockup, and safe function.
Professional gunsmith installation is required. Complete a full timing, lockup, and safety check after installation.
This listing is for the cylinder stop and spring assembly only. No firearm, frame, or other revolver parts are included.
This listing is in full compliance with all applicable federal, state, and local laws and regulations related to firearms and parts. We only ship to addresses within the United States.