{"product_id":"smith-wesson-k-frame-pre-model-locking-bolt-2-barrel-longer-nos-v39","title":"Smith \u0026 Wesson K Frame Pre-Model Locking Bolt 2\" Barrel \u0026 Longer NOS - V39","description":"\u003ch2\u003eSmith \u0026amp; Wesson K Frame Pre-Model Locking Bolt — 2\" Barrel \u0026amp; Longer, New Old Stock\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePart #V39 | New Old Stock (NOS) | K Frame | Pre-Model | 2\" Barrel \u0026amp; Longer | Multi-Caliber\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGenuine Smith \u0026amp; Wesson New Old Stock (NOS) locking bolt for pre-model K Frame revolvers with 2\" barrels and longer. The locking bolt is a cylindrical pin that passes through the frame at the front of the cylinder window and locks the barrel into the frame threads after timing. \u003cstrong\u003eA missing or damaged locking bolt allows the barrel to back out of the frame under the torque and recoil of firing — a critical safety issue.\u003c\/strong\u003e Do not operate a K Frame revolver with a missing or damaged locking bolt.\u003c\/p\u003e\u003cp\u003eThe 2\" and longer barrel specification corresponds to the locking bolt length of \u003cstrong\u003e0.6385\"\u003c\/strong\u003e. This dimension must match the barrel shank and frame hole; verify the correct bolt length for your specific barrel configuration before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNew Old Stock (NOS):\u003c\/strong\u003e Factory new unused parts from original S\u0026amp;W production. Not current production, not used. NOS pre-model parts are increasingly scarce.\u003c\/p\u003e\u003ch3\u003eCompatible Models (K Frame, Pre-Model, 2\" Barrel \u0026amp; Longer)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMilitary \u0026amp; Police (M\u0026amp;P)\u003c\/strong\u003e — K Frame .38 Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVictory Model\u003c\/strong\u003e — WWII military production K Frame .38 Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK-22 Masterpiece\u003c\/strong\u003e — K Frame .22 LR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK-22 Combat Masterpiece\u003c\/strong\u003e — K Frame .22 LR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK-38 Masterpiece\u003c\/strong\u003e — K Frame .38 Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eK-38 Combat Masterpiece\u003c\/strong\u003e — K Frame .38 Special\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral:\u003c\/strong\u003e All pre-model K Frame revolvers with adjustable or fixed sights and 2\" barrels or longer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e V39\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Locking Bolt (Barrel Locking Bolt)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame:\u003c\/strong\u003e K Frame (pre-model)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 2\" and longer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e 0.6385\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New Old Stock (NOS) — factory new, unused, original production\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eLocking bolt installation requires barrel removal and timing verification. \u003cstrong\u003eProfessional gunsmith installation required.\u003c\/strong\u003e After installation, verify barrel timing, cylinder gap (.004\"–.006\" typical), and that the locking bolt is fully seated and flush. Function test before live fire.\u003c\/p\u003e","brand":"Smith \u0026 Wesson","offers":[{"title":"Default Title","offer_id":22564732796986,"sku":"V39","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1423\/2020\/products\/DSC01818.JPG?v=1571387035","url":"https:\/\/usagunsandgear.com\/products\/smith-wesson-k-frame-pre-model-locking-bolt-2-barrel-longer-nos-v39","provider":"USA Guns And Gear","version":"1.0","type":"link"}