{"product_id":"scope-ring-adapter-1-30mm-4-slot-picatinny-top-rail-barrel-clamp-for-flashlight-laser","title":"Scope Ring Adapter 1\"\/30mm – 4-Slot Picatinny Top Rail, Barrel Clamp for Flashlight \u0026 Laser","description":"\u003ch2\u003eTwo Sizes. One Mount. Endless Accessories.\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eScope Ring Adapter with Picatinny Rail\u003c\/strong\u003e converts your 25.4mm (1\") or 30mm scope tube into a mounting platform for tactical accessories. The 4-slot top rail accepts any standard 21mm Picatinny accessory—flashlights, lasers, red dots, micro dots, and backup sights—while four screws per ring hold zero shot after shot.\u003c\/p\u003e\u003ch3\u003eBenefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-diameter fit\u003c\/strong\u003e – Circular hard gasket switches between 30mm and 25.4mm (1\") tubes. Note: gasket required for 1\" rings; not needed for 30mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-slot Picatinny top rail\u003c\/strong\u003e – 1.77\" rail accepts standard 21mm accessories: flashlights, lasers, red dots, micro dots, and backup sights.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-screw retention\u003c\/strong\u003e – Double screws on both sides distribute clamping force for a secure, zero-holding mount under recoil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAircraft-grade aluminum\u003c\/strong\u003e – Precision CNC machined, matte black anodized finish; lightweight at ~40g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool-included install\u003c\/strong\u003e – Hex wrench included for fast, easy attachment and removal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMaterial: Aluminum Alloy (Aircraft Grade)\u003c\/li\u003e\n\u003cli\u003eColor: Matte Black\u003c\/li\u003e\n\u003cli\u003eCompatible tube diameter: 25.4mm (1\") \/ 30mm\u003c\/li\u003e\n\u003cli\u003eRail slots: 4 (21mm Picatinny)\u003c\/li\u003e\n\u003cli\u003eRail length: 1.77\"\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.77\" L × 1.72\" W × 1.70\" H\u003c\/li\u003e\n\u003cli\u003eWeight: ~40g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePackage Includes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 × Scope Ring Adapter\u003c\/li\u003e\n\u003cli\u003e1 × Support Ring\u003c\/li\u003e\n\u003cli\u003e1 × Hex Wrench\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Castellan","offers":[{"title":"Default Title","offer_id":43509749907519,"sku":null,"price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/2876\/5247\/files\/331.jpg?v=1783659871","url":"https:\/\/www.castellan.cn\/products\/scope-ring-adapter-1-30mm-4-slot-picatinny-top-rail-barrel-clamp-for-flashlight-laser","provider":"Castellan","version":"1.0","type":"link"}