{"product_id":"bad-16-uppr-auth-elite-556-ambi-blk","title":"Battle Arms Development Authority Elite 5.56 NATO Upper Receiver – Ambidextrous, AR-15 Compatible","description":"\u003cp\u003eThe Battle Arms Development Authority Elite upper receiver is a forged 7075-T6 aluminum upper chambered for 5.56 NATO, designed for standard AR-15 lower receivers. This ambidextrous configuration features a forward assist on both sides, accommodating right- and left-handed shooters without compromise. The upper is machined with M4 feed ramps and a mil-spec ejection port for reliable function with standard bolts and magazines.\u003c\/p\u003e\u003cp\u003eFinished in hard-anodized black Type III coating for corrosion and wear resistance. The upper receiver ships as a stripped unit—no barrel, handguard, or bolt carrier group included. Installation requires standard AR-15 upper assembly tools and knowledge of proper headspacing procedures. Compatible with mil-spec charging handles and standard upper receiver components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO \/ .223 Remington\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Stripped upper receiver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lower:\u003c\/strong\u003e AR-15 \/ mil-spec lower receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged 7075-T6 aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Hard-anodized Type III black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Ambidextrous forward assist, M4 feed ramps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Upper receiver only (no barrel, BCG, or handguard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires upper assembly tools and proper headspacing verification\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Battle Arms Development","offers":[{"title":"Default Title","offer_id":47937298530559,"sku":"BAD-AUTH-UR16B-Y-15","price":865.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2940783.jpg?v=1766484010","url":"https:\/\/doublestackstore.com\/products\/bad-16-uppr-auth-elite-556-ambi-blk","provider":"Double Stack Store","version":"1.0","type":"link"}