{"product_id":"cmmg-spring-action-ar15-carbine","title":"CMMG Action Spring – AR-15 Carbine Buffer System","description":"\u003cp\u003eThe CMMG AR-15 Carbine Action Spring is a replacement or spare spring designed for carbine-length buffer systems in AR-15 platforms. This spring cycles the bolt carrier group rearward and returns it to battery during firing. Over time and use, action springs can weaken or take a set, leading to reliability issues—keeping a quality spare on hand ensures your rifle stays in fighting condition.\u003c\/p\u003e\u003cp\u003eManufactured from heat-treated chrome silicon wire to CMMG's specifications, this spring delivers consistent tension and durability. It installs in seconds as a drop-in component—simply remove the buffer retaining pin, pull the buffer and old spring from the receiver extension, and replace. No gunsmithing required. Compatible with mil-spec carbine buffer tubes on standard AR-15 rifles and carbines.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Action Spring (Buffer Spring)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15 Carbine-Length Buffer Systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Chrome Silicon Wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e As Manufactured\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 Action Spring\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMMG","offers":[{"title":"Default Title","offer_id":47934698389759,"sku":"CMMG55CA9A2","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1256515.jpg?v=1766476713","url":"https:\/\/doublestackstore.com\/products\/cmmg-spring-action-ar15-carbine","provider":"Double Stack Store","version":"1.0","type":"link"}