S&W K Frame Model 13 Strain Screw Square Butt Nickel Plated .357 Magnum - 13V21
$4.99
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S&W K Frame Model 13 Strain Screw Square Butt Nickel Plated .357 Magnum - 13V21
$4.99
Smith & Wesson K Frame Model 13 Strain Screw — Square Butt, Nickel Plated
The strain screw is a critical mainspring tension adjustment screw located in the grip frame of S&W revolvers. Adjusting or replacing it affects trigger pull weight — making this a key part for both restoration and action tuning on your Model 13. This is the square butt variant with a nickel plated finish, correct for nickel-finished Model 13 revolvers.
- Part Number: 13V21
- Fits: Smith & Wesson K Frame / L Frame — Model 13
- Caliber: .357 Magnum
- Frame Size: K Frame / L Frame
- Butt Style: Square Butt
- Finish: Nickel Plated
- Condition: Used, Old Style
Genuine used S&W factory part. Suitable for gunsmiths and collectors performing Model 13 restoration, action work, or hardware replacement. Professional installation is recommended.