design and giving it a modern twist with the new BRN-180 upper assembly. Based on the original 1960s era AR-180, this upper employs a robust short-stroke piston system, a three prong flash hider ...

In 2019, it opted to go the retro route with the launch of the 5.56 NATO/.223 Rem. BRN-180 series of factory complete AR-15 uppers inspired by Eugene Stoner's AR-18/180. As a scaled-down version ...