{"product_id":"smith-wesson-k-frame-rimfire-hammer-assembly-model-18-k112a","title":"Smith \u0026 Wesson K Frame Hammer Assembly - Model 18 - .370\" Spur - Used - .22 LR Rimfire K112A","description":"\u003cp\u003e\u003cstrong\u003eFactory OEM Smith \u0026amp; Wesson K Frame Rimfire Hammer Assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e K112A\u003cbr\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e K Frame Model 18\u003cbr\u003e\u003cstrong\u003eCaliber:\u003c\/strong\u003e .22 LR (Rimfire)\u003cbr\u003e\u003cstrong\u003eSpur Width:\u003c\/strong\u003e .370\" (Standard Spur)\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Used\u003cbr\u003e\u003cstrong\u003eFrame Size:\u003c\/strong\u003e K Frame\u003c\/p\u003e\n\u003cp\u003eThis is an authentic Smith \u0026amp; Wesson factory hammer assembly designed specifically for K Frame Model 18 rimfire revolvers. The hammer is a critical fire control component that strikes the firing pin to ignite the primer. This hammer features a .370\" standard spur for reliable cocking control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Smith \u0026amp; Wesson factory part\u003c\/li\u003e\n\u003cli\u003eComplete hammer assembly ready to install\u003c\/li\u003e\n\u003cli\u003e.370\" standard spur width\u003c\/li\u003e\n\u003cli\u003eUsed condition with functional operation\u003c\/li\u003e\n\u003cli\u003eRimfire-specific design (not compatible with centerfire models)\u003c\/li\u003e\n\u003cli\u003eDirect replacement for worn or damaged hammers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIMPORTANT Compatibility Note:\u003c\/strong\u003e This hammer is designed ONLY for K Frame rimfire revolvers (Models 17, 18, 48, 617, 648, K22). Rimfire hammers have a different firing pin configuration and are NOT interchangeable with centerfire K Frame models (10, 12, 13, 14, 15, 16, 19, 64, 65, 66, 67). The hammer is the only K Frame part that is caliber-specific - all other internal parts interchange between rimfire and centerfire models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel 18 Compatibility:\u003c\/strong\u003e The Model 18 Combat Masterpiece is a K Frame .22 LR revolver designed for target shooting and training. This hammer assembly fits all Model 18 dash variants.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e Professional gunsmith installation required. The hammer is an internal fire control component that requires complete disassembly of the revolver. Proper fitting, timing, and function testing are essential for safe operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Identify Your Smith \u0026amp; Wesson Model:\u003c\/strong\u003e Swing out the cylinder and check behind the yoke on the frame for the model number. Model numbers began in 1957-58. If you need assistance identifying your revolver or confirming compatibility, contact us with your serial number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestions?\u003c\/strong\u003e Contact us at \u003ca href=\"mailto:sales@usagunsandgear.com\"\u003esales@usagunsandgear.com\u003c\/a\u003e or call 770-544-8075. We specialize in Smith \u0026amp; Wesson pistol and revolver parts - new, used, NOS, and refurbished.\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":20922597638202,"sku":"K112A","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/DSCN0766_820dce2e-c19a-4dcf-a072-b6ddc5e73465.JPG?v=1571386876","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-k-frame-rimfire-hammer-assembly-model-18-k112a","provider":"USA Guns And Gear","version":"1.0","type":"link"}