{"product_id":"solgw-l89-bs-v2-5-56-13-7-hux-blk","title":"Sons of Liberty Gun Works L89 BS V2 5.56 NATO 13.7\" Upper Receiver – AR-15 Platform","description":"\u003cp\u003eThe SOLGW L89 BS V2 upper receiver delivers a complete 5.56 NATO solution with a 13.7-inch barrel optimized for pinned and welded muzzle device configurations. Built on the L89 (License to Carry) platform, this upper is designed for AR-15 lower receivers and balances velocity retention with compact handling. The 13.7-inch length allows shooters to achieve a legal 16-inch overall barrel length when paired with an appropriate muzzle device, making it a practical choice for defensive and duty applications.\u003c\/p\u003e\u003cp\u003eConstructed with a mil-spec forged upper receiver and a medium-profile barrel, this upper features a durable black finish. The HUX rail system provides M-LOK attachment points for accessories while maintaining a low-profile design. Upper includes bolt carrier group and charging handle. Installation requires standard AR-15 armorer's tools; professional pinning and welding of muzzle device recommended to meet NFA compliance.\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 AR-15 \/ Mil-Spec\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 13.7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged aluminum receiver, medium-profile barrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black\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\u003eInstallation:\u003c\/strong\u003e Requires muzzle device pinning\/welding for NFA compliance\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sons of Liberty Gun Works","offers":[{"title":"Default Title","offer_id":47938891874559,"sku":"SOLGWM4L89BSUPP137XL","price":1364.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/5506772.jpg?v=1766535321","url":"https:\/\/doublestackstore.com\/products\/solgw-l89-bs-v2-5-56-13-7-hux-blk","provider":"Double Stack Store","version":"1.0","type":"link"}