Smith & Wesson J Frame Model 32 & 33 Mainspring, Stirrup & Swivel .38 S&W Used - Part #V339

Smith & Wesson J Frame Model 32 & 33 Mainspring, Stirrup & Swivel – .38 S&W (Old Style, Used)

Restore reliable hammer fall on your Model 32 or Model 33 with this genuine Smith & Wesson factory mainspring assembly. The mainspring, stirrup, and swivel work together to drive the hammer — these three components are commonly replaced together during action work or when restoring a revolver with a weak or broken hammer spring.

This listing includes the complete set: mainspring, stirrup, and swivel. Old-style configuration correct for the Model 32 and Model 33. Sourced from a used firearm and inspected for function.

Compatibility

• Smith & Wesson J Frame – Model 32 (Terrier)
• Smith & Wesson J Frame – Model 33 (Regulation Police)
• Caliber: .38 S&W
• Old Style configuration

What’s Included

• Mainspring (Hammer Spring)
• Stirrup
• Swivel

Part Details

• Part #V339
• Condition: Used
• Genuine Smith & Wesson factory replacement parts
• Manufactured to original S&W specifications and tolerances

Installation Note

Disassembly and reassembly of the revolver is required to replace these parts. Installation by a qualified gunsmith is recommended.

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.

Questions? Email or call us — we’re here for all your Smith & Wesson parts needs.