{"product_id":"sylvan-arms-arh300-ar-folding-stock-adapter-black-gen-3","title":"Sylvan Arms ARH300 AR Folding Stock Adapter - Black | Gen 3","description":"Specifically designed for gas piston and direct impingement systems 5.56 to .308 systems, as well as .223 compatible, it has standard 1-3\/16” x 16 thread and does not require any additional parts to be used with standard BC Groups. It is CNC-machined in the USA from 7075 Billet Aluminum, making it uniquely lightweight and corrosion resistant. This assembly weighs only 6.0 ounces. No special tools required only a standard armorer’s wrench. The product does not need to be disassembled in order to install it on to your rifle\/pistol. Simply screw on, fold, and carry! SPECIFICATIONS • Fit: platforms .223\/5.56 to .308 \u0026amp; most 9mm:– 9mm bolt carriers with 5\/8 ID (.625) standard sizing can use the bolt extension included, after removing the pin and weight from the bolt carrier– 17\/32 .531 bolt extension for smaller bolt carriers is available here– If your PSA bolt carrier is causing the bolt extension to come up short contact us for a conversion.-Does NOT work with Silent Capture Buffer Springs.-Does NOT work with JP Enterprise Buffer Systems.-Adds nothing to length of pull.• Surface treatment: hard coat black anodized• Material: 7075 CNC-machined billet Aluminum• Thread specifications: 1-3\/16″ X 16• Hinge dimensions: 3 11\/16 inches• Hinge weight: 6.0 oz, BC – Extension 2.2 oz• Hinge length: 1.3 inches• Warranty: limited lifetime Designed, built, and assembled in the USA [Download Manual]","brand":"Sylvan Arms","offers":[{"title":"Default Title","offer_id":44685943177435,"sku":"ARH300","price":155.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/1072\/7131\/files\/179892978.webp?v=1738348036","url":"https:\/\/www.atcostammo.com\/products\/sylvan-arms-arh300-ar-folding-stock-adapter-black-gen-3","provider":"AtCostAmmo.com","version":"1.0","type":"link"}