{"product_id":"sw-k-frame-hammer-365-spur-stainless-model-66-1-357-magnum-66107c","title":"S\u0026W K Frame Hammer .365\" Spur Stainless Steel Model 66-1 .357 Magnum Used 66107C","description":"\u003ch3\u003eGenuine Smith \u0026amp; Wesson K Frame Hammer Assembly\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 66107C\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Used, fully functional\u003cbr\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Model 66-1 (.357 Magnum)\u003cbr\u003e\u003cstrong\u003eFrame Type:\u003c\/strong\u003e K Frame (Centerfire)\u003cbr\u003e\u003cstrong\u003eSpur Width:\u003c\/strong\u003e .365\" (standard)\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003cbr\u003e\u003cstrong\u003eDesign:\u003c\/strong\u003e Old-style configuration\u003c\/p\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cp\u003eThis authentic Smith \u0026amp; Wesson stainless steel hammer is a direct-fit replacement component for Model 66-1 Combat Magnum revolvers. The .365\" spur width provides the standard profile for reliable thumb cocking and comfortable double-action shooting. This old-style hammer features the classic S\u0026amp;W design with integrated firing pin.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Smith \u0026amp; Wesson OEM part – factory quality and fit\u003c\/li\u003e\n\u003cli\u003eStainless steel construction matches Model 66 finish\u003c\/li\u003e\n\u003cli\u003e.365\" spur width – standard factory specification\u003c\/li\u003e\n\u003cli\u003eOld-style design for early Model 66-1 production\u003c\/li\u003e\n\u003cli\u003ePre-inspected used condition – ready to install\u003c\/li\u003e\n\u003cli\u003eCenterfire configuration for .357 Magnum\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThis centerfire hammer is designed for Smith \u0026amp; Wesson K Frame Model 66-1 revolvers chambered in .357 Magnum. It is compatible with other centerfire K Frame models including Models 10, 11, 12, 13, 14, 15, 16, 19, 64, 65, 66, and 67.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This hammer is NOT compatible with rimfire K Frame models (17, 18, 48, 617, 648, K22) due to different firing pin configurations. Rimfire and centerfire hammers are not interchangeable.\u003c\/p\u003e\u003ch3\u003eWhy Choose OEM Parts?\u003c\/h3\u003e\u003cp\u003eFactory Smith \u0026amp; Wesson hammers are precision-machined and heat-treated to exact specifications for proper hardness, durability, and reliable ignition. Using genuine parts ensures correct geometry for proper trigger engagement, sear contact, and firing pin alignment – critical for safety and function.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eNote: Professional installation by a qualified gunsmith is strongly recommended. Proper fitting, timing verification, and function testing are essential when replacing hammer components.\u003c\/em\u003e\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":41173091975226,"sku":"66107C","price":42.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/files\/DSC09966_f123e447-499d-4ef4-9157-68b70e592ca3.jpg?v=1767635407","url":"https:\/\/usagunsandgear.com\/products\/sw-k-frame-hammer-365-spur-stainless-model-66-1-357-magnum-66107c","provider":"USA Guns And Gear","version":"1.0","type":"link"}