{"product_id":"luth-ar-bs-10b-buffer-spring-223-5-56-ar-15-a2-rifle-length","title":"Luth-AR BS-10B Buffer Spring 223\/5.56 AR-15 - A2 Rifle-Length","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eLuth-AR BS-10B\u003c\/span\u003e\u003c\/strong\u003e is a replacement \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e223\/5.56mm\u003c\/span\u003e\u003c\/strong\u003e \u003cstrong\u003ebuffer spring\u003c\/strong\u003e purpose-built for the \u003cstrong\u003eAR-15 rifle platform\u003c\/strong\u003e equipped with an \u003cstrong\u003eA2 rifle-length receiver extension\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eManufactured from \u003cstrong\u003estainless steel\u003c\/strong\u003e, this spring lives inside the AR-15 buffer tube and drives the buffer and bolt carrier group through their cycle during firing. Luth-AR calibrates the BS-10B specifically for \u003cstrong\u003e223 Remington\u003c\/strong\u003e and \u003cstrong\u003e5.56x45mm NATO\u003c\/strong\u003e chamberings, making it a drop-in fit for any standard rifle-length AR-15 lower. The spring stands \u003cstrong\u003e13-1\/4\" tall\u003c\/strong\u003e with \u003cstrong\u003e44 coils\u003c\/strong\u003e for reliable, repeatable cycling.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003eBS-10B\u003c\/strong\u003e is the correct replacement spring for AR-15s running a fixed A2 buttstock on a rifle-length buffer tube, and is a worthwhile spare to keep on hand for routine rebuilds and field service.\u003c\/span\u003e\u003c\/p\u003e","brand":"Luth-AR","offers":[{"title":"Default Title","offer_id":55233964409154,"sku":"186400","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_92d1c27e-b7a4-4b6d-8ac4-2bc3e1cceb74.png?v=1785008712","url":"https:\/\/centerfiresystems.com\/products\/luth-ar-bs-10b-buffer-spring-223-5-56-ar-15-a2-rifle-length","provider":"Centerfire Systems","version":"1.0","type":"link"}