Black Rain Ordnance Milled Upper Receiver, 223 Rem/556NATO, Flat Top Sights, Black Finish BRO-MUR-2 Black Rain Ordnance" Inc. is a precision rearms manufacturer specializing in the modern sporting rifle design. Founded in 2009 with a benchmark to only manufacture weapons we would personally be proud to own and operate. They've sought out the best machinists to turn ideas into reality with a goal of creating something any gun enthusiast would be proud to not only own but to put on display as well. We strive to use only American metal so that each of Black Rain Ordnance products is truly an authentic American creation.