Smith & Wesson K Frame Cylinder Stop Bolt & Spring - 1881A

Smith & Wesson K Frame Cylinder Stop (Bolt) and Spring

Used factory OEM Smith & Wesson cylinder stop, also called a bolt, supplied with its spring. Part number 1881A. The cylinder stop engages the cylinder notches to help lock the cylinder in alignment with the barrel and is an important timing and lockup component.

Model Compatibility

Frame: K Frame
Caliber: .22 LR rimfire application, with the current fitment list also covering the centerfire K Frame models shown above
Includes: Cylinder stop (bolt) and spring
Condition: Used, functional factory part
Part number: 1881A

Features

• Genuine Smith & Wesson factory OEM part
• Complete cylinder stop and spring assembly
• Helps maintain proper cylinder alignment, timing, and lockup
• Useful for repair, replacement, or restoration of a compatible K Frame revolver

Important fitment note: Compatibility depends on the exact model, dash variation, cylinder-stop geometry, and spring configuration. Confirm your revolver and compare the original part before ordering. This compatibility chart reflects the current fitment information for part 1881A and is not a substitute for a gunsmith’s inspection.

Installation: Professional gunsmith installation is required. The cylinder stop is an internal timing component, and improper installation can cause cylinder misalignment or unsafe operation.

This is a used firearm part and may show finish wear from prior service. Have a qualified gunsmith inspect and install the part before use.

To identify your Smith & Wesson model, swing out the cylinder and check behind the yoke on the frame for the model number. Older revolvers without model numbers may require serial-number research.