{"product_id":"sons-of-liberty-gun-works-m4-l89-upper-receiver-group-14-5-5-56-nato-u-m4l89-556-145-asr","title":"Sons of Liberty Gun Works M4-L89 Upper Receiver Group 14.5\" 5.56 NATO U-M4L89-556-145-ASR","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe Sons of Liberty Gun Works M4-L89 Upper Receiver Group (URG) is a precision-built AR-15 compatible upper assembly engineered for reliability and performance. Chambered in 5.56 NATO, this URG features a 14.5-inch Liberty Fighting Barrel with a pinned and welded ASR Flash Hider, bringing the overall barrel length to a compliant 16 inches. The forged mil-spec upper receiver pairs with the 13.75-inch L89 7-Sided M-LOK handguard, offering a rigid yet lightweight platform for accessory mounting. A mid-length gas system ensures smooth and reliable cycling with reduced felt recoil. Integral QD sling attachment points at the barrel nut on both sides and the Drivelock Barrel Nut System round out a thoughtfully designed package. Note: Does not include a bolt carrier group (BCG) or charging handle.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e14.5\" 5.56 NATO Liberty Fighting Barrel with Pinned and Welded ASR Flash Hider for a compliant 16\" overall barrel length\u003c\/li\u003e\n  \u003cli\u003e13.75\" L89 7-Sided M-LOK Handguard provides a slim, ergonomic profile with versatile accessory mounting options\u003c\/li\u003e\n  \u003cli\u003eIntegral QD sling attachment points at the barrel nut on both sides for flexible sling configurations\u003c\/li\u003e\n  \u003cli\u003eDrivelock Barrel Nut System ensures precise and secure handguard alignment every time\u003c\/li\u003e\n  \u003cli\u003eForged mil-spec upper receiver with matte black finish, fully compatible with standard AR-15 lower receivers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sons of Liberty Gun Works\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 14.5\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Barrel Length (with Pinned and Welded Flash Hider):\u003c\/strong\u003e 16\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandguard:\u003c\/strong\u003e 13.75\" L89 7-Sided M-LOK Rail\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGas System:\u003c\/strong\u003e Mid-Length\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMuzzle Device:\u003c\/strong\u003e ASR Flash Hider (Pinned and Welded)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Matte Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e AR-15\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Upper Receiver, Barrel, Handguard, ASR Flash Hider (Pinned and Welded)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes Not Include:\u003c\/strong\u003e Bolt Carrier Group (BCG), Charging Handle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 657628673026\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN:\u003c\/strong\u003e U-M4L89-556-145-ASR\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Sons of Liberty Gun Works","offers":[{"title":"Default Title","offer_id":44199991738490,"sku":"FLX-SOLGWUM4L89556145ASR","price":1130.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/308990715.jpg?v=1788396439","url":"https:\/\/tlooutdoors.com\/products\/sons-of-liberty-gun-works-m4-l89-upper-receiver-group-14-5-5-56-nato-u-m4l89-556-145-asr","provider":"TLO Outdoors","version":"1.0","type":"link"}