Smith & Wesson Model 63 J Frame Stirrup, Spring & Swivel .22 LR, Part# 63167

Smith & Wesson Model 63 Stirrup, Spring & Swivel – Part# 63167

This is a genuine factory Smith & Wesson stirrup, spring, and swivel set for the J Frame Model 63 revolver chambered in .22 Long Rifle. An old-style used part in serviceable condition — a cost-effective solution for restoring your Model 63's mainspring assembly.

The stirrup is the U-shaped link that connects the mainspring to the hammer, transferring spring energy to drive the hammer forward during firing. The swivel allows the stirrup to pivot smoothly through the firing cycle. Together with the spring, these three components form the core of the revolver's mainspring assembly. A broken or fatigued stirrup or spring results in light hammer strikes, misfires, or complete failure to fire.

Part Details

• Part Number: 63167
• Part Name: Stirrup, Spring & Swivel (Mainspring Assembly)
• Condition: Used, factory original (old style)
• Frame: J Frame
• Caliber: .22 Long Rifle (rimfire)
• Includes: Stirrup + mainspring + swivel
• Function: Connects mainspring to hammer; drives hammer fall in DA/SA operation

Model Compatibility

Note: Mainspring components are frame-specific and not interchangeable between J, K, L, or N Frame revolvers. Parts may also vary between rimfire and centerfire J Frame configurations and between old-style and current-production revolvers. Always confirm your exact model before ordering. Model numbers are stamped on the frame behind the yoke when the cylinder is swung out. Pre-1957 revolvers may not have a model number — contact us with your serial number for assistance.

Installation

Stirrup and mainspring replacement requires grip and side plate removal and disassembly of the mainspring assembly. We recommend installation by a qualified gunsmith to ensure correct spring tension and reliable hammer fall.

Questions about fitment? Call or email us — we're happy to help.