{"product_id":"luth-ar-308-lower-parts-kit-builder","title":"Luth-AR .308 Lower Parts Kit Builder – AR-10 Pattern Rifles","description":"\u003cp\u003eThe Luth-AR .308 Lower Parts Kit provides all the internal components needed to complete an AR-10 pattern lower receiver. This builder kit includes trigger group, hammer, disconnector, springs, pins, buffer retainer, takedown pins, and all small parts required for a functioning lower—excluding fire control group, pistol grip, and stock components. It's designed for builders who prefer to select their own trigger system and furniture separately.\u003c\/p\u003e\u003cp\u003eAll components are machined to mil-spec dimensions with black oxide finish on steel parts. Installation requires basic armorer tools including pin punches, hammer, and roll pin starter punch. Some experience with AR platform assembly is recommended to avoid damaging roll pins or lower receiver.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Lower Parts Kit (Builder Configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-10\/.308 pattern lower receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel components with black oxide finish\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires armorer tools and AR assembly experience\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Trigger guard, pins, springs, detents, bolt catch assembly, magazine catch assembly, selector detent and spring, buffer retainer and spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot Included:\u003c\/strong\u003e Fire control group (trigger, hammer, disconnector), pistol grip, stock hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Luth-AR","offers":[{"title":"Default Title","offer_id":47938473427199,"sku":"LUTHLRPK-BLDR-308","price":44.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1290433.jpg?v=1766516995","url":"https:\/\/doublestackstore.com\/products\/luth-ar-308-lower-parts-kit-builder","provider":"Double Stack Store","version":"1.0","type":"link"}