{"product_id":"smith-wesson-k-frame-center-pin-spring-rimfire-054580000","title":"Smith \u0026 Wesson K Frame Center Pin Spring Rimfire Models 17 18 617 647 648 - 054580000","description":"\u003cp\u003e\u003cstrong\u003eSmith \u0026amp; Wesson K Frame Center Pin Spring - Part #054580000\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFactory OEM center pin spring designed specifically for \u003cstrong\u003eK Frame rimfire revolvers\u003c\/strong\u003e. This critical spring retains the cylinder center pin, ensuring proper cylinder operation and reliable lockup.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCompatible K Frame Rimfire Models:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 17\u003c\/strong\u003e (.22 LR) - 1957-present (K-22 Masterpiece)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 18\u003c\/strong\u003e (.22 LR) - 1957-1985 (Combat Masterpiece)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 617\u003c\/strong\u003e (.22 LR) - 1990-present (stainless steel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 647\u003c\/strong\u003e (.17 HMR) - 2003-2004 (stainless steel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel 648\u003c\/strong\u003e (.22 WMR) - 1990-1996, 2003-2005 (stainless steel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant Rimfire Specification:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis center pin spring is designed specifically for \u003cstrong\u003eK Frame rimfire revolvers only\u003c\/strong\u003e. All models listed above are .22 caliber rimfire variants (.22 LR, .22 WMR, .17 HMR) of the K Frame platform. This part is NOT compatible with centerfire K Frame models (10, 12, 13, 14, 15, 16, 19, 64, 65, 66, 67).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFactory new OEM component - authentic Smith \u0026amp; Wesson quality\u003c\/li\u003e\n\u003cli\u003ePrecision spring steel construction for consistent retention\u003c\/li\u003e\n\u003cli\u003eEssential for proper cylinder swing-out and lockup\u003c\/li\u003e\n\u003cli\u003eDirect replacement part - fits rimfire K Frame models listed above\u003c\/li\u003e\n\u003cli\u003eEnsures smooth cylinder operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe center pin spring retains the cylinder center pin in place, which secures the cylinder to the crane (yoke) assembly. It ensures proper cylinder alignment, smooth rotation, and reliable lockup. Replace if worn or if experiencing cylinder retention issues.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGunsmith installation recommended - requires disassembly and reassembly of cylinder crane mechanism.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNeed Help Identifying Your Model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSwing out the cylinder and check behind the yoke on the frame for a model number. Model numbers began in 1957-58. Contact us with your serial number and we can help identify the correct parts.\u003c\/p\u003e\n\n\u003cp\u003eWe specialize in used, new, and new old stock Smith \u0026amp; Wesson double action revolver parts. Contact us for all your S\u0026amp;W part needs!\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":32277301194,"sku":"054580000","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/24_12_47a74a51-9d23-43d3-bd13-3beb73e564af.jpg?v=1571385032","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-k-frame-center-pin-spring-rimfire-054580000","provider":"USA Guns And Gear","version":"1.0","type":"link"}