{"product_id":"smith-wesson-j-frame-model-642-trigger-hammer-310-mim-64231","title":"Smith \u0026 Wesson J Frame Model 642 .310\" Trigger \u0026 Hammer MIM .38 Special — Used Part 64231","description":"\u003ch2\u003eSmith \u0026amp; Wesson J Frame Model 642 .310\" Trigger \u0026amp; Hammer Assembly — MIM, Used OEM Part\u003c\/h2\u003e\n\u003cp\u003eGenuine used Smith \u0026amp; Wesson factory trigger and hammer assembly for the Model 642 Airweight J Frame revolver chambered in .38 Special. This MIM (Metal Injection Molded) new-style set features a .310\" wide trigger face and is designed for the Model 642's concealed hammer (Centennial-style) configuration. Removed from a used firearm and in excellent condition — a direct OEM replacement for worn, damaged, or missing fire control components.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 64231\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Smith \u0026amp; Wesson\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 642 (J Frame Airweight, Centennial)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Trigger \u0026amp; Hammer Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrigger Width:\u003c\/strong\u003e .310\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHammer Type:\u003c\/strong\u003e Concealed \/ Shrouded (Centennial)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e MIM (Metal Injection Molded), New Style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e .38 Special \/ .38 Special +P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Size:\u003c\/strong\u003e J Frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used — original factory parts, excellent condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTrigger Assembly — .310\" wide, MIM new style, designed for concealed hammer\u003c\/li\u003e\n\u003cli\u003eHammer Assembly — concealed\/shrouded type, MIM new style\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eModel Compatibility Chart\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom:2px solid #ddd;\"\u003e\n\u003cth style=\"text-align:left; padding:8px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px;\"\u003eFrame\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px;\"\u003eHammer Type\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding:8px;\"\u003eCompatibility\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 642 (all dash variants)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame Airweight\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eConcealed (Centennial)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e✓ Compatible — listed model\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 442 (all dash variants)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame Airweight\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eConcealed (Centennial)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e⚠ Verify fit — blued variant, same platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 640 (Centennial)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eConcealed (Centennial)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e⚠ Verify fit — same hammer type, non-Airweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 637 (Airweight)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame Airweight\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eExposed\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e✗ Not compatible — exposed hammer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 638 (Bodyguard Airweight)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame Airweight\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eShrouded\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e✗ Not compatible — shrouded hammer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModel 36, 60 (Chief's Special)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eExposed\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e✗ Not compatible — exposed hammer, non-MIM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #eee;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003eModels 34, 43, 63 (rimfire)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eJ Frame\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e—\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e✗ Not compatible — rimfire models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis listing includes both the trigger and hammer assembly.\u003c\/strong\u003e Trigger return spring, hammer spring, pins, and associated parts are sold separately.\u003c\/li\u003e\n\u0026gt;li\u0026gt;This trigger and hammer set is specific to the Model 642 with \u003cstrong\u003econcealed hammer\u003c\/strong\u003e (Centennial-style). It is \u003cstrong\u003enot interchangeable\u003c\/strong\u003e with exposed-hammer J Frame triggers (Models 36, 37, 60) or shrouded-hammer triggers (Model 638).\n\u0026gt;li\u0026gt;This is a \u003cstrong\u003eMIM (Metal Injection Molded)\u003c\/strong\u003e new-style set. Earlier Model 642 production may have used non-MIM (machined) components that are not interchangeable with MIM parts.\n\u0026gt;li\u0026gt;This is a \u003cstrong\u003eused\u003c\/strong\u003e part set in excellent condition. May show minor wear consistent with normal use.\n\u0026gt;li\u0026gt;Trigger and hammer replacement requires disassembly of the action. Installation by a qualified gunsmith is strongly recommended.\n\u003c\/ul\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":39611167735866,"sku":"64231","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/DSC00512_2630605e-5547-4b16-aa50-eec4d442a886.jpg?v=1767036274","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-j-frame-model-642-trigger-hammer-310-mim-64231","provider":"USA Guns And Gear","version":"1.0","type":"link"}