{"product_id":"smith-wesson-model-63-j-frame-stirrup-spring-swivel-22lr-63167","title":"Smith \u0026 Wesson Model 63 J Frame Stirrup, Spring \u0026 Swivel .22 LR, Part# 63167","description":"\u003ch2\u003eSmith \u0026amp; Wesson Model 63 Stirrup, Spring \u0026amp; Swivel – Part# 63167\u003c\/h2\u003e\u003cp\u003eThis is a genuine factory Smith \u0026amp; 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.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 63167\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Name:\u003c\/strong\u003e Stirrup, Spring \u0026amp; Swivel (Mainspring Assembly)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used, factory original (old style)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e J Frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e .22 Long Rifle (rimfire)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Stirrup + mainspring + swivel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Connects mainspring to hammer; drives hammer fall in DA\/SA operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eModel Compatibility\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eCaliber\u003c\/th\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 63\u003c\/td\u003e\n\u003ctd\u003e.22 LR (rimfire)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 43 \/ 43C\u003c\/td\u003e\n\u003ctd\u003e.22 LR (rimfire)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 317\u003c\/td\u003e\n\u003ctd\u003e.22 LR (rimfire)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 34\u003c\/td\u003e\n\u003ctd\u003e.22 LR (rimfire)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 36 \/ 60\u003c\/td\u003e\n\u003ctd\u003e.38 Special \/ .357 Mag\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment — same frame, centerfire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eK \/ L \/ N Frame\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eLarger frames\u003c\/td\u003e\n\u003ctd\u003e❌ Different frame size\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eNote: 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.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eStirrup 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.\u003c\/p\u003e\u003cp\u003eQuestions about fitment? Call or email us — we're happy to help.\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":40829390782522,"sku":"63167","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/files\/DSC06958.jpg?v=1742573064","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-model-63-j-frame-stirrup-spring-swivel-22lr-63167","provider":"USA Guns And Gear","version":"1.0","type":"link"}