{"product_id":"sw-j-frame-model-30-cylinder-stop-spring-old-style-used","title":"Smith \u0026 Wesson J Frame Model 30 Cylinder Stop \u0026 Spring Old Style - Used","description":"\u003cp\u003e\u003cstrong\u003eThis listing is for a used Smith \u0026amp; Wesson J Frame Model 30 cylinder stop and spring — Old Style. Factory OEM parts sold as-is.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe cylinder stop (also called the bolt) is the part that locks the cylinder in alignment with the barrel at the moment of firing, ensuring each chamber indexes precisely with the forcing cone. The cylinder stop spring provides the tension that drives the stop into the cylinder notches. This is the \u003cstrong\u003eOld Style\u003c\/strong\u003e version (part JB3009A), correct for earlier production Model 30 revolvers chambered in .32 S\u0026amp;W Long. A key action component for gunsmiths performing timing work or restoration on vintage Hand Ejector revolvers.\u003c\/p\u003e\n\n\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e JB3009A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Included:\u003c\/strong\u003e Cylinder Stop (Bolt) \u0026amp; Cylinder Stop Spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Old Style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Smith \u0026amp; Wesson J Frame Model 30 (earlier production)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e .32 S\u0026amp;W Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e J Frame\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM:\u003c\/strong\u003e Smith \u0026amp; Wesson Factory Part\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eOld Style vs. New Style\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eStyle\u003c\/th\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJB3009A\u003c\/td\u003e\n\u003ctd\u003eOld Style\u003c\/td\u003e\n\u003ctd\u003eEarlier production Model 30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJB3009\u003c\/td\u003e\n\u003ctd\u003eNew Style\u003c\/td\u003e\n\u003ctd\u003eLater production Model 30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eIf you are unsure which style your revolver requires, contact us with your serial number and we can help identify the correct part.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eModel Compatibility\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eFrame\u003c\/th\u003e\n\u003cth\u003eCaliber\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 30 (early production)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.32 S\u0026amp;W Long\u003c\/td\u003e\n\u003ctd\u003e✅ Yes — Old Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 30-1\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.32 S\u0026amp;W Long\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify — may require New Style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 31\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.32 S\u0026amp;W Long\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 32 (Pre-Model)\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.32 S\u0026amp;W Long\u003c\/td\u003e\n\u003ctd\u003e⚠️ Verify fitment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel 36 \/ 60 \/ 37\u003c\/td\u003e\n\u003ctd\u003eJ Frame\u003c\/td\u003e\n\u003ctd\u003e.38 Special\u003c\/td\u003e\n\u003ctd\u003e❌ No — different caliber\/generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eNote: The Model 30 is chambered in .32 S\u0026amp;W Long, distinct from .38 Special. Cylinder stop fitment and timing can vary between production eras and dash numbers. Always confirm your model and dash number before ordering. To find your model number, swing out the cylinder and check behind the yoke on the frame. Models without a number predate 1957–58 — contact us with your serial number for assistance.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eCylinder stop installation and timing verification requires a qualified gunsmith. Improper fitment can result in cylinder misalignment and unsafe conditions. Factory replacement parts are manufactured to the same specifications, tolerances, and materials as the originals.\u003c\/p\u003e\n\n\u003cp\u003eQuestions? Shoot us an email or give us a call — we're here for all your S\u0026amp;W needs.\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":39542880043066,"sku":"JB3009A","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/DSC00611_871b36ec-75b1-4105-b370-1b133be85754.jpg?v=1786111768","url":"https:\/\/usagunsandgear.com\/products\/sw-j-frame-model-30-cylinder-stop-spring-old-style-used","provider":"USA Guns And Gear","version":"1.0","type":"link"}