Shop AR-15 300 AAC Blackout Uppers by Moriarti Armaments for superior performance and durability. Upgrade your AR-15 with premium quality uppers designed for ... Moriarti Armaments is a licensed firearm manufacturer, dealer, and distributor located in Miami, Florida. Since 2014, we’ve been serving the firearms industry, with a growing presence not only across USA market but also in... https://moriartiarmaments.com/ar-15-6.5-grendel/upper-assemblies/300-blackout/