S&W K Frame Model 10 Bolt, Spring & Plunger .38 Special Used, Part 1045

Smith & Wesson K Frame Model 10 Bolt, Spring & Plunger — Used

Part #1045 | Used OEM Factory Part | .38 Special

• Fits: S&W K Frame Model 10
• Caliber: .38 Special
• Includes: Bolt (Cylinder Stop), Spring, and Plunger
• Condition: Used — original Smith & Wesson factory part, old style
• Frame Size: K Frame

The bolt (cylinder stop) assembly locks the cylinder in alignment with the barrel at the moment of firing, ensuring consistent accuracy and safe operation. A worn or broken bolt, spring, or plunger can cause the cylinder to rotate out of time, resulting in misfires or dangerous conditions. This used OEM assembly restores factory-correct cylinder lockup.

Installation Note: Disassembly and reassembly required. Some fitting by a qualified gunsmith may be necessary.

How to Identify Your S&W Model Number

Swing out the cylinder and check behind the yoke on the frame. Model numbers were introduced in 1957–58. If no model number is present, your revolver may pre-date that era — contact us with your serial number and we can help identify the correct part.

We specialize in new, used, and new-old-stock Smith & Wesson double-action revolver parts. Contact us for any S&W parts needs.