{"product_id":"luth-ar-308-carbine-buffer-spring","title":"Luth-AR .308 Carbine Buffer Spring – AR-10\/LR-308 Pattern Rifles","description":"\u003cp\u003eThe Luth-AR .308 Carbine Buffer Spring is engineered for AR-10 and LR-308 pattern rifles with carbine-length buffer tubes. This spring manages the heavier bolt carrier and buffer mass required for .308 Winchester\/7.62×51mm operation, providing reliable cycling with factory and defensive ammunition. It's a replacement component for worn springs or an upgrade for builders assembling .308 carbine platforms.\u003c\/p\u003e\u003cp\u003eMade from heat-treated steel wire with a corrosion-resistant finish, this spring is designed to maintain proper tension over extended use. Installation is drop-in for shooters familiar with AR-platform disassembly—no gunsmithing required. Fits all mil-spec carbine buffer tubes on large-frame AR rifles.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Buffer Spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-10, LR-308, and large-frame AR rifles with carbine-length buffer tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat-treated steel wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Corrosion-resistant coating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e One (1) .308 carbine buffer spring\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Luth-AR","offers":[{"title":"Default Title","offer_id":47938419851519,"sku":"LUTH308-CS-10A","price":6.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1289970.jpg?v=1766513914","url":"https:\/\/doublestackstore.com\/products\/luth-ar-308-carbine-buffer-spring","provider":"Double Stack Store","version":"1.0","type":"link"}