{"product_id":"millsport-upper-300blk-16-ml","title":"American Tactical Inc Millsport Upper 300BLK 16\" ML – Complete AR-15 Upper Receiver Assembly","description":"\u003cp\u003eThe American Tactical Inc Millsport Upper is a complete AR-15 upper receiver assembly chambered in 300 Blackout with a 16-inch barrel and M-LOK compatible handguard. This drop-in upper provides shooters with a reliable platform for subsonic and supersonic 300 BLK ammunition, offering versatility for hunting, home defense, and suppressed shooting applications.\u003c\/p\u003e\u003cp\u003eBuilt on a forged upper receiver with a properly headspaced bolt carrier group, this assembly is compatible with standard mil-spec AR-15 lower receivers. The M-LOK handguard provides modular attachment points for lights, grips, and other accessories. Upper includes bolt carrier group and charging handle for immediate installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Complete AR-15 Upper Receiver Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 300 Blackout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandguard:\u003c\/strong\u003e M-LOK compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Mil-spec AR-15 lower receivers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt carrier group, charging handle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Hunting, home defense, suppressed shooting\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"American Tactical Inc","offers":[{"title":"Default Title","offer_id":47950702444799,"sku":"ATI15MS300ML15","price":297.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/ati15ms556ml15b6de.jpg?v=1766721161","url":"https:\/\/doublestackstore.com\/products\/millsport-upper-300blk-16-ml","provider":"Double Stack Store","version":"1.0","type":"link"}