S&W J Frame Model 642-2 Airweight Firing Pin Retaining Pin .38 Special +P – Part# 642Q

Smith & Wesson J Frame Model 642-2 Airweight Firing Pin Retaining Pin – Stainless Steel

Replace a worn or missing firing pin retaining pin on your Model 642-2 Airweight with this factory-original component. The firing pin retaining pin passes through the frame to secure the firing pin in its channel, preventing it from falling free during disassembly or under recoil — a missing or damaged retaining pin allows the firing pin to become loose or lost, rendering the revolver unable to fire. This stainless steel pin is the correct factory replacement for the J Frame Model 642-2 chambered in .38 S&W Special +P.

• Part Number: 642Q
• Fits: Smith & Wesson J Frame Model 642-2 Airweight
• Caliber: .38 S&W Special +P
• Part Type: Firing Pin Retaining Pin
• Finish: Stainless Steel
• Condition: Used (factory original)
• Installation: Gunsmith fitting recommended

Factory Replacement Quality

Genuine Smith & Wesson factory part manufactured to the exact specifications and tolerances of the original — same diameter, same length, same reliable firing pin retention. No aftermarket substitutes.

Finding Your Model Number

Swing out the cylinder and check behind the yoke on the frame. Model numbers have been stamped there since 1957–58. If your revolver has no model number, it predates that era — contact us with the serial number and we'll help identify the correct part.

Questions? Call or email us — we're happy to help you get the right part the first time.