{"product_id":"smith-wesson-model-51-j-frame-thumb-piece-nut-blue-steel-22-magnum-51157","title":"Smith \u0026 Wesson Model 51 J Frame Thumb Piece \u0026 Nut Blue Steel .22 Magnum, Part# 51157","description":"\u003ch2\u003eSmith \u0026amp; Wesson Model 51 Thumb Piece \u0026amp; Nut – Part# 51157\u003c\/h2\u003e\u003cp\u003eThis is a genuine factory Smith \u0026amp; Wesson thumb piece and nut for the J Frame Model 51 revolver chambered in .22 Magnum Rimfire (.22 WMR). An old-style used blue steel part in serviceable condition — a cost-effective solution for replacing a worn, damaged, or missing cylinder release latch on your Model 51.\u003c\/p\u003e\u003cp\u003eThe thumb piece (also called the cylinder release latch or cylinder latch) is the lever on the left side of the frame that you push forward to unlock and swing the cylinder out for loading and unloading. The nut secures the thumb piece to the frame. A worn, bent, or broken thumb piece prevents the cylinder from opening reliably — a critical function for any revolver.\u003c\/p\u003e\u003ch3\u003ePart Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 51157\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Name:\u003c\/strong\u003e Thumb Piece \u0026amp; Nut (Cylinder Release Latch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Blue Steel\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 Magnum Rimfire (.22 WMR \/ .22 M.R.F.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Thumb piece + securing nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Releases cylinder latch to allow cylinder to swing out for loading\/unloading\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\u003eFinish\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 51\u003c\/td\u003e\n\u003ctd\u003e.22 Magnum (.22 WMR)\u003c\/td\u003e\n\u003ctd\u003eBlue Steel\u003c\/td\u003e\n\u003ctd\u003e✅ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 53\u003c\/td\u003e\n\u003ctd\u003e.22 Jet \/ .22 LR\u003c\/td\u003e\n\u003ctd\u003eBlue Steel\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 63\u003c\/td\u003e\n\u003ctd\u003e.22 LR (rimfire)\u003c\/td\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003ctd\u003e❌ Different finish \u0026amp; caliber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 36 \/ 37\u003c\/td\u003e\n\u003ctd\u003e.38 Special\u003c\/td\u003e\n\u003ctd\u003eBlue \/ Alloy\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment — centerfire, same frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 60\u003c\/td\u003e\n\u003ctd\u003e.38 Special \/ .357 Mag\u003c\/td\u003e\n\u003ctd\u003eStainless\u003c\/td\u003e\n\u003ctd\u003e❌ Different finish\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\u003e—\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: The Model 51 is chambered in .22 Magnum Rimfire (.22 WMR) — not .22 LR. This thumb piece is blue steel finish — not compatible with stainless J Frame revolvers. Thumb pieces are frame-specific and finish-specific. Always confirm your exact model and finish before ordering. Model numbers are stamped on the frame behind the yoke when the cylinder is swung out.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eThumb piece and nut replacement requires side plate removal and careful disassembly of the cylinder latch assembly. We recommend installation by a qualified gunsmith to ensure correct fit and reliable cylinder release function.\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":40821879865402,"sku":"51157","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/files\/DSC06725.jpg?v=1741967200","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-model-51-j-frame-thumb-piece-nut-blue-steel-22-magnum-51157","provider":"USA Guns And Gear","version":"1.0","type":"link"}