{"product_id":"stern-defense-sd8-mod5-m-lok-45-acp-6-ar-15-upper","title":"Stern Defense SD8 Mod5 M-LOK 45 ACP 6\" AR-15 Upper","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eStern Defense SD8 Mod5 M-LOK\u003c\/span\u003e\u003c\/strong\u003e is a compact \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e45 ACP\u003c\/span\u003e\u003c\/strong\u003e complete upper assembly for the AR-15 platform, purpose-built for short pistol-caliber builds where a stubby, maneuverable package is the priority. The upper pairs a stubby barrel with a free-float M-LOK handguard so you get a clean, modern mounting surface for optics, lights, and slings without giving up the inherent pointability of a \u003cstrong\u003e6\" barrel\u003c\/strong\u003e setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eAt the core is a \u003cstrong\u003e6\"\u003c\/strong\u003e barrel machined from \u003cstrong\u003eChrome Moly Steel\u003c\/strong\u003e with a \u003cstrong\u003e1:16\"\u003c\/strong\u003e rate of twist and finished in \u003cstrong\u003eBlack Melonite\u003c\/strong\u003e for excellent corrosion and wear resistance in a hard-use pistol-caliber carbine. The Melonite treatment also gives the barrel a deep, uniform black finish that matches the rest of the assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe upper receiver is a \u003cstrong\u003eMil-Spec flat top\u003c\/strong\u003e machined from \u003cstrong\u003e7075-T6 aluminum\u003c\/strong\u003e and \u003cstrong\u003ehard-coat anodized\u003c\/strong\u003e for long-term durability. Stern Defense finishes it off with their \u003cstrong\u003elaser-engraved dust cover and forward assist\u003c\/strong\u003e for a clean, factory-built appearance right out of the box.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eUp front, the \u003cstrong\u003e8\" MOD5 M-LOK\u003c\/strong\u003e free-float handguard is machined from \u003cstrong\u003e6061 aircraft grade aluminum\u003c\/strong\u003e and hard-coat anodized to match the receiver. M-LOK slots run along the handguard for accessories, and integrated \u003cstrong\u003equick-detach swivel holes\u003c\/strong\u003e accept standard QD sling mounts directly without adapters.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eDrop this Stern Defense upper onto any standard AR-15 lower to field a dedicated \u003cstrong\u003e45 ACP\u003c\/strong\u003e pistol-caliber carbine or pistol platform with a compact, maneuverable footprint.\u003c\/span\u003e\u003c\/p\u003e","brand":"Stern Defense","offers":[{"title":"Default Title","offer_id":55474893750594,"sku":"181071","price":555.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_64aecc08-940e-4a7b-91a1-0617004a3e8b.png?v=1785497671","url":"https:\/\/centerfiresystems.com\/products\/stern-defense-sd8-mod5-m-lok-45-acp-6-ar-15-upper","provider":"Centerfire Systems","version":"1.0","type":"link"}