Smith & Wesson J Frame Model 642-2 Airweight Cylinder Stop .38 S&W Special +P - Part# 642I

Smith & Wesson J Frame Model 642-2 Airweight Cylinder Stop

Part# 642I | .38 S&W Special +P | Stainless Steel (MIM) | Used Part

The cylinder stop is the small but critical locking component that indexes and locks the cylinder in alignment with the barrel at the moment of firing. A worn or broken cylinder stop can cause misalignment and unsafe conditions. This is a genuine S&W factory MIM (Metal Injection Molded) stainless steel part, pulled from a 642-2 Airweight and ready to restore your revolver to proper function.

Part Details

• Part Number: 642I
• Condition: Used
• Material: Stainless Steel (MIM)
• Fits: Smith & Wesson J Frame Model 642-2 Airweight (.38 S&W Special +P)
• OEM: Smith & Wesson factory part

Compatibility

This part fits the S&W J Frame Model 642-2 Airweight. To confirm your model number, swing out the cylinder and check behind the yoke on the frame. Model numbers were introduced in 1957–58 — if your revolver predates this, contact us with the serial number and we'll help identify the correct part.

Installation

Disassembly and reassembly are required to replace this part. Installation by a qualified gunsmith is recommended. Factory replacement parts are manufactured to the same specifications, tolerances, and materials as the originals.

Questions? Call or email us — we're happy to help with all your S&W parts needs.