Smith & Wesson K Frame Model 12 Cylinder Stop & Spring - .38 Special, Part# 1281B

Smith & Wesson K Frame Model 12 Cylinder Stop & Spring

Keep your revolver's cylinder indexing precisely with this genuine Smith & Wesson cylinder stop and spring assembly. This old-style used OEM part is pulled from a factory-original Model 12 Airweight and is ready to restore proper function to your K Frame revolver.

Part Details

• Part Number: 1281B
• Condition: Used – Old Style OEM
• Caliber: .38 Special
• Frame Size: K Frame
• Includes: Cylinder Stop & Spring

Compatible Models

This cylinder stop and spring is compatible with the following Smith & Wesson K Frame revolvers (old-style configuration):

• Model 12 (.38 Special Airweight)
• Model 10 (.38 Special)
• Model 13 (.357 Magnum / .38 Special)
• Model 14 (.38 Special)
• Model 15 (.38 Special)
• Model 64 (.38 Special Stainless)
• Model 65 (.357 Magnum Stainless)

Note: Verify your specific model and serial number range before ordering. Old-style parts may not be compatible with later production revolvers.

Why Replace the Cylinder Stop?

A worn or broken cylinder stop causes the cylinder to fail to lock up properly between shots — a critical safety and accuracy issue. Replacing this small but vital part restores positive cylinder lockup and keeps your revolver shooting reliably.