{"product_id":"spikes-556nato-m4-le-upper-w-rail","title":"Spike's Tactical 5.56 NATO M4 LE Upper Receiver with Rail","description":"\u003cp\u003eThe Spike's Tactical 5.56 NATO M4 LE Upper Receiver is a complete mil-spec upper assembly designed for law enforcement and civilian AR-15 platforms. Chambered in 5.56 NATO, this upper features a carbine-length gas system with M4 barrel profile and integrated rail system for optics and accessories. Compatible with any mil-spec AR-15 lower receiver.\u003c\/p\u003e\u003cp\u003eMachined from 7075-T6 aluminum with Type III hard coat anodized finish. Upper includes bolt carrier group and charging handle. Drop-in installation requires no gunsmithing—simply mate to your lower receiver and secure with takedown pins. Rail system allows co-witness mounting of iron sights and red dots.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Complete upper receiver assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lower:\u003c\/strong\u003e Mil-spec AR-15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075-T6 forged aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type III hard coat anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas System:\u003c\/strong\u003e Carbine-length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Bolt carrier group, charging handle, rail system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Drop-in, no gunsmithing required\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Spike's Tactical","offers":[{"title":"Default Title","offer_id":47938905735423,"sku":"SPKSTU5025-R9S","price":743.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1336588.jpg?v=1766536336","url":"https:\/\/doublestackstore.com\/products\/spikes-556nato-m4-le-upper-w-rail","provider":"Double Stack Store","version":"1.0","type":"link"}